diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index 787aa19410..0565f7e976 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -17,7 +17,6 @@ package com.android.launcher3.taskbar;
 
 import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
 import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_A11Y;
-import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_A11Y_LONG_CLICK;
 import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_BACK;
 import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_HOME;
 import static com.android.launcher3.taskbar.TaskbarNavButtonController.BUTTON_IME_SWITCH;
@@ -90,7 +89,6 @@ public class NavbarButtonsViewController {
 
     private static final int MASK_IME_SWITCHER_VISIBLE = FLAG_SWITCHER_SUPPORTED | FLAG_IME_VISIBLE;
 
-    private View.OnLongClickListener mA11yLongClickListener;
     private final ArrayList<StatePropertyHolder> mPropertyHolders = new ArrayList<>();
     private final ArrayList<ImageView> mAllButtons = new ArrayList<>();
     private int mState;
@@ -142,11 +140,6 @@ public class NavbarButtonsViewController {
         mNavButtonsView.getLayoutParams().height = mContext.getDeviceProfile().taskbarSize;
         mNavButtonTranslationYMultiplier.value = 1;
 
-        mA11yLongClickListener = view -> {
-            mControllers.navButtonController.onButtonClick(BUTTON_A11Y_LONG_CLICK);
-            return true;
-        };
-
         mPropertyHolders.add(new StatePropertyHolder(
                 mControllers.taskbarViewController.getTaskbarIconAlpha()
                         .getProperty(ALPHA_INDEX_IME),
@@ -285,7 +278,6 @@ public class NavbarButtonsViewController {
         mPropertyHolders.add(new StatePropertyHolder(mA11yButton,
                 flags -> (flags & FLAG_A11Y_VISIBLE) != 0
                         && (flags & FLAG_ROTATION_BUTTON_VISIBLE) == 0));
-        mA11yButton.setOnLongClickListener(mA11yLongClickListener);
     }
 
     private void parseSystemUiFlags(int sysUiStateFlags) {
@@ -441,6 +433,8 @@ public class NavbarButtonsViewController {
         ImageView buttonView = addButton(parent, id, layoutId);
         buttonView.setImageResource(drawableId);
         buttonView.setOnClickListener(view -> navButtonController.onButtonClick(buttonType));
+        buttonView.setOnLongClickListener(view ->
+                navButtonController.onButtonLongClick(buttonType));
         return buttonView;
     }
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
index a8a0b59f87..ae23eda2a4 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarNavButtonController.java
@@ -16,9 +16,11 @@
 
 package com.android.launcher3.taskbar;
 
-import static android.view.Display.DEFAULT_DISPLAY;
 
-import android.view.inputmethod.InputMethodManager;
+import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_HOME_BUTTON_LONG_PRESS;
+import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_KEY;
+
+import android.os.Bundle;
 
 import androidx.annotation.IntDef;
 
@@ -35,11 +37,9 @@ import java.lang.annotation.RetentionPolicy;
  * Controller for 3 button mode in the taskbar.
  * Handles all the functionality of the various buttons, making/routing the right calls into
  * launcher or sysui/system.
- *
- * TODO: Create callbacks to hook into UI layer since state will change for more context buttons/
- *       assistant invocation.
  */
 public class TaskbarNavButtonController {
+
     @Retention(RetentionPolicy.SOURCE)
     @IntDef(value = {
             BUTTON_BACK,
@@ -47,7 +47,6 @@ public class TaskbarNavButtonController {
             BUTTON_RECENTS,
             BUTTON_IME_SWITCH,
             BUTTON_A11Y,
-            BUTTON_A11Y_LONG_CLICK
     })
 
     public @interface TaskbarButton {}
@@ -57,7 +56,6 @@ public class TaskbarNavButtonController {
     static final int BUTTON_RECENTS = BUTTON_HOME << 1;
     static final int BUTTON_IME_SWITCH = BUTTON_RECENTS << 1;
     static final int BUTTON_A11Y = BUTTON_IME_SWITCH << 1;
-    static final int BUTTON_A11Y_LONG_CLICK = BUTTON_A11Y << 1;
 
     private final TouchInteractionService mService;
 
@@ -82,9 +80,22 @@ public class TaskbarNavButtonController {
             case BUTTON_A11Y:
                 notifyImeClick(false /* longClick */);
                 break;
-            case BUTTON_A11Y_LONG_CLICK:
+        }
+    }
+
+    public boolean onButtonLongClick(@TaskbarButton int buttonType) {
+        switch (buttonType) {
+            case BUTTON_HOME:
+                startAssistant();
+                return true;
+            case BUTTON_A11Y:
                 notifyImeClick(true /* longClick */);
-                break;
+                return true;
+            case BUTTON_BACK:
+            case BUTTON_IME_SWITCH:
+            case BUTTON_RECENTS:
+            default:
+                return false;
         }
     }
 
@@ -113,4 +124,11 @@ public class TaskbarNavButtonController {
             systemUiProxy.notifyAccessibilityButtonClicked(mService.getDisplayId());
         }
     }
+
+    private void startAssistant() {
+        Bundle args = new Bundle();
+        args.putInt(INVOCATION_TYPE_KEY, INVOCATION_TYPE_HOME_BUTTON_LONG_PRESS);
+        SystemUiProxy systemUiProxy = SystemUiProxy.INSTANCE.getNoCreate();
+        systemUiProxy.startAssistant(args);
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/RecentTasksList.java b/quickstep/src/com/android/quickstep/RecentTasksList.java
index c5f4a53877..097850fd6f 100644
--- a/quickstep/src/com/android/quickstep/RecentTasksList.java
+++ b/quickstep/src/com/android/quickstep/RecentTasksList.java
@@ -36,6 +36,7 @@ import com.android.wm.shell.recents.IRecentTasksListener;
 import com.android.wm.shell.util.GroupedRecentTaskInfo;
 import com.android.wm.shell.util.StagedSplitBounds;
 
+import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.function.Consumer;
@@ -219,6 +220,26 @@ public class RecentTasksList {
         return newTasks;
     }
 
+    public void dump(String prefix, PrintWriter writer) {
+        writer.println(prefix + "RecentTasksList:");
+        writer.println(prefix + "  mChangeId=" + mChangeId);
+        writer.println(prefix + "  mResultsUi=[id=" + mResultsUi.mRequestId + ", tasks=");
+        for (GroupTask task : mResultsUi) {
+            writer.println(prefix + "    t1=" + task.task1.key.id
+                    + " t2=" + (task.hasMultipleTasks() ? task.task2.key.id : "-1"));
+        }
+        writer.println(prefix + "  ]");
+        int currentUserId = Process.myUserHandle().getIdentifier();
+        ArrayList<GroupedRecentTaskInfo> rawTasks =
+                mSysUiProxy.getRecentTasks(Integer.MAX_VALUE, currentUserId);
+        writer.println(prefix + "  rawTasks=[");
+        for (GroupedRecentTaskInfo task : rawTasks) {
+            writer.println(prefix + "    t1=" + task.mTaskInfo1.taskId
+                    + " t2=" + (task.mTaskInfo2 != null ? task.mTaskInfo2.taskId : "-1"));
+        }
+        writer.println(prefix + "  ]");
+    }
+
     private static class TaskLoadResult extends ArrayList<GroupTask> {
 
         final int mRequestId;
diff --git a/quickstep/src/com/android/quickstep/RecentsModel.java b/quickstep/src/com/android/quickstep/RecentsModel.java
index e539a8c7c4..5d77a6e916 100644
--- a/quickstep/src/com/android/quickstep/RecentsModel.java
+++ b/quickstep/src/com/android/quickstep/RecentsModel.java
@@ -43,6 +43,7 @@ import com.android.systemui.shared.system.KeyguardManagerCompat;
 import com.android.systemui.shared.system.TaskStackChangeListener;
 import com.android.systemui.shared.system.TaskStackChangeListeners;
 
+import java.io.PrintWriter;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.Executor;
@@ -220,6 +221,11 @@ public class RecentsModel extends TaskStackChangeListener implements IconChangeL
         mThumbnailChangeListeners.remove(listener);
     }
 
+    public void dump(String prefix, PrintWriter writer) {
+        writer.println(prefix + "RecentsModel:");
+        mTaskList.dump("  ", writer);
+    }
+
     /**
      * Listener for receiving various task properties changes
      */
diff --git a/quickstep/src/com/android/quickstep/SystemUiProxy.java b/quickstep/src/com/android/quickstep/SystemUiProxy.java
index 68b7558cf2..c8abd14d22 100644
--- a/quickstep/src/com/android/quickstep/SystemUiProxy.java
+++ b/quickstep/src/com/android/quickstep/SystemUiProxy.java
@@ -83,14 +83,16 @@ public class SystemUiProxy implements ISystemUiProxy,
         MAIN_EXECUTOR.execute(() -> clearProxy());
     };
 
-    // Save the listeners passed into the proxy since when set/register these listeners,
-    // setProxy may not have been called, eg. OverviewProxyService is not connected yet.
-    private IPipAnimationListener mPendingPipAnimationListener;
-    private ISplitScreenListener mPendingSplitScreenListener;
-    private IStartingWindowListener mPendingStartingWindowListener;
-    private ISmartspaceCallback mPendingSmartspaceCallback;
-    private IRecentTasksListener mPendingRecentTasksListener;
-    private final ArrayList<RemoteTransitionCompat> mPendingRemoteTransitions = new ArrayList<>();
+    // Save the listeners passed into the proxy since OverviewProxyService may not have been bound
+    // yet, and we'll need to set/register these listeners with SysUI when they do.  Note that it is
+    // up to the caller to clear the listeners to prevent leaks as these can be held indefinitely
+    // in case SysUI needs to rebind.
+    private IPipAnimationListener mPipAnimationListener;
+    private ISplitScreenListener mSplitScreenListener;
+    private IStartingWindowListener mStartingWindowListener;
+    private ISmartspaceCallback mSmartspaceCallback;
+    private IRecentTasksListener mRecentTasksListener;
+    private final ArrayList<RemoteTransitionCompat> mRemoteTransitions = new ArrayList<>();
 
     // Used to dedupe calls to SystemUI
     private int mLastShelfHeight;
@@ -167,29 +169,23 @@ public class SystemUiProxy implements ISystemUiProxy,
         mRecentTasks = recentTasks;
         linkToDeath();
         // re-attach the listeners once missing due to setProxy has not been initialized yet.
-        if (mPendingPipAnimationListener != null && mPip != null) {
-            setPinnedStackAnimationListener(mPendingPipAnimationListener);
-            mPendingPipAnimationListener = null;
+        if (mPipAnimationListener != null && mPip != null) {
+            setPinnedStackAnimationListener(mPipAnimationListener);
         }
-        if (mPendingSplitScreenListener != null && mSplitScreen != null) {
-            registerSplitScreenListener(mPendingSplitScreenListener);
-            mPendingSplitScreenListener = null;
+        if (mSplitScreenListener != null && mSplitScreen != null) {
+            registerSplitScreenListener(mSplitScreenListener);
         }
-        if (mPendingStartingWindowListener != null && mStartingWindow != null) {
-            setStartingWindowListener(mPendingStartingWindowListener);
-            mPendingStartingWindowListener = null;
+        if (mStartingWindowListener != null && mStartingWindow != null) {
+            setStartingWindowListener(mStartingWindowListener);
         }
-        if (mPendingSmartspaceCallback != null && mSmartspaceTransitionController != null) {
-            setSmartspaceCallback(mPendingSmartspaceCallback);
-            mPendingSmartspaceCallback = null;
+        if (mSmartspaceCallback != null && mSmartspaceTransitionController != null) {
+            setSmartspaceCallback(mSmartspaceCallback);
         }
-        for (int i = mPendingRemoteTransitions.size() - 1; i >= 0; --i) {
-            registerRemoteTransition(mPendingRemoteTransitions.get(i));
+        for (int i = mRemoteTransitions.size() - 1; i >= 0; --i) {
+            registerRemoteTransition(mRemoteTransitions.get(i));
         }
-        mPendingRemoteTransitions.clear();
-        if (mPendingRecentTasksListener != null && mRecentTasks != null) {
-            registerRecentTasksListener(mPendingRecentTasksListener);
-            mPendingRecentTasksListener = null;
+        if (mRecentTasksListener != null && mRecentTasks != null) {
+            registerRecentTasksListener(mRecentTasksListener);
         }
 
         if (mPendingSetNavButtonAlpha != null) {
@@ -513,9 +509,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call setPinnedStackAnimationListener", e);
             }
-        } else {
-            mPendingPipAnimationListener = listener;
         }
+        mPipAnimationListener = listener;
     }
 
     public Rect startSwipePipToHome(ComponentName componentName, ActivityInfo activityInfo,
@@ -553,9 +548,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call registerSplitScreenListener");
             }
-        } else {
-            mPendingSplitScreenListener = listener;
         }
+        mSplitScreenListener = listener;
     }
 
     public void unregisterSplitScreenListener(ISplitScreenListener listener) {
@@ -566,7 +560,7 @@ public class SystemUiProxy implements ISystemUiProxy,
                 Log.w(TAG, "Failed call unregisterSplitScreenListener");
             }
         }
-        mPendingSplitScreenListener = null;
+        mSplitScreenListener = null;
     }
 
     /** Start multiple tasks in split-screen simultaneously. */
@@ -687,9 +681,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call registerRemoteTransition");
             }
-        } else {
-            mPendingRemoteTransitions.add(remoteTransition);
         }
+        mRemoteTransitions.add(remoteTransition);
     }
 
     public void unregisterRemoteTransition(RemoteTransitionCompat remoteTransition) {
@@ -700,7 +693,7 @@ public class SystemUiProxy implements ISystemUiProxy,
                 Log.w(TAG, "Failed call registerRemoteTransition");
             }
         }
-        mPendingRemoteTransitions.remove(remoteTransition);
+        mRemoteTransitions.remove(remoteTransition);
     }
 
     //
@@ -717,9 +710,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call setStartingWindowListener", e);
             }
-        } else {
-            mPendingStartingWindowListener = listener;
         }
+        mStartingWindowListener = listener;
     }
 
     //
@@ -733,9 +725,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call setStartingWindowListener", e);
             }
-        } else {
-            mPendingSmartspaceCallback = callback;
         }
+        mSmartspaceCallback = callback;
     }
 
     //
@@ -749,9 +740,8 @@ public class SystemUiProxy implements ISystemUiProxy,
             } catch (RemoteException e) {
                 Log.w(TAG, "Failed call registerRecentTasksListener", e);
             }
-        } else {
-            mPendingRecentTasksListener = listener;
         }
+        mRecentTasksListener = listener;
     }
 
     public void unregisterRecentTasksListener(IRecentTasksListener listener) {
@@ -762,7 +752,7 @@ public class SystemUiProxy implements ISystemUiProxy,
                 Log.w(TAG, "Failed call unregisterRecentTasksListener");
             }
         }
-        mPendingRecentTasksListener = null;
+        mRecentTasksListener = null;
     }
 
     public ArrayList<GroupedRecentTaskInfo> getRecentTasks(int numTasks, int userId) {
diff --git a/quickstep/src/com/android/quickstep/TaskShortcutFactory.java b/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
index 8c4ba97c07..cbdbdb5571 100644
--- a/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
+++ b/quickstep/src/com/android/quickstep/TaskShortcutFactory.java
@@ -72,7 +72,13 @@ public interface TaskShortcutFactory {
         @Override
         public SystemShortcut getShortcut(BaseDraggingActivity activity,
                 TaskIdAttributeContainer taskContainer) {
-            return new AppInfo(activity, taskContainer.getItemInfo());
+            TaskView taskView = taskContainer.getTaskView();
+            AppInfo.SplitAccessibilityInfo accessibilityInfo =
+                    new AppInfo.SplitAccessibilityInfo(taskView.containsMultipleTasks(),
+                            TaskUtils.getTitle(taskView.getContext(), taskContainer.getTask()),
+                            taskContainer.getA11yNodeId()
+                    );
+            return new AppInfo(activity, taskContainer.getItemInfo(), accessibilityInfo);
         }
 
         @Override
diff --git a/quickstep/src/com/android/quickstep/TouchInteractionService.java b/quickstep/src/com/android/quickstep/TouchInteractionService.java
index e1894ae8ca..6c69171b2a 100644
--- a/quickstep/src/com/android/quickstep/TouchInteractionService.java
+++ b/quickstep/src/com/android/quickstep/TouchInteractionService.java
@@ -951,6 +951,7 @@ public class TouchInteractionService extends Service
             pw.println("  resumed=" + resumed);
             pw.println("  mConsumer=" + mConsumer.getName());
             ActiveGestureLog.INSTANCE.dump("", pw);
+            RecentsModel.INSTANCE.get(this).dump("", pw);
             pw.println("ProtoTrace:");
             pw.println("  file=" + ProtoTracer.INSTANCE.get(this).getTraceFile());
         }
diff --git a/quickstep/src/com/android/quickstep/ViewUtils.java b/quickstep/src/com/android/quickstep/ViewUtils.java
index 184ab17ae2..e290be8e33 100644
--- a/quickstep/src/com/android/quickstep/ViewUtils.java
+++ b/quickstep/src/com/android/quickstep/ViewUtils.java
@@ -15,8 +15,10 @@
  */
 package com.android.quickstep;
 
+import android.graphics.HardwareRenderer;
 import android.os.Handler;
 import android.view.View;
+import android.view.ViewRootImpl;
 
 import com.android.launcher3.Utilities;
 import com.android.systemui.shared.system.ViewRootImplCompat;
@@ -45,9 +47,9 @@ public class ViewUtils {
         return new FrameHandler(view, onFinishRunnable, canceled).schedule();
     }
 
-    private static class FrameHandler implements LongConsumer {
+    private static class FrameHandler implements HardwareRenderer.FrameDrawingCallback {
 
-        final ViewRootImplCompat mViewRoot;
+        final ViewRootImpl mViewRoot;
         final Runnable mFinishCallback;
         final BooleanSupplier mCancelled;
         final Handler mHandler;
@@ -55,14 +57,14 @@ public class ViewUtils {
         int mDeferFrameCount = 1;
 
         FrameHandler(View view, Runnable finishCallback, BooleanSupplier cancelled) {
-            mViewRoot = new ViewRootImplCompat(view);
+            mViewRoot = view.getViewRootImpl();
             mFinishCallback = finishCallback;
             mCancelled = cancelled;
             mHandler = new Handler();
         }
 
         @Override
-        public void accept(long l) {
+        public void onFrameDraw(long frame) {
             Utilities.postAsyncCallback(mHandler, this::onFrame);
         }
 
@@ -83,7 +85,7 @@ public class ViewUtils {
         }
 
         private boolean schedule() {
-            if (mViewRoot.isValid()) {
+            if (mViewRoot.getView() != null) {
                 mViewRoot.registerRtFrameCallback(this);
                 mViewRoot.getView().invalidate();
                 return true;
diff --git a/quickstep/src/com/android/quickstep/inputconsumers/AssistantInputConsumer.java b/quickstep/src/com/android/quickstep/inputconsumers/AssistantInputConsumer.java
index 510820a1e5..162ace4965 100644
--- a/quickstep/src/com/android/quickstep/inputconsumers/AssistantInputConsumer.java
+++ b/quickstep/src/com/android/quickstep/inputconsumers/AssistantInputConsumer.java
@@ -24,6 +24,8 @@ import static android.view.MotionEvent.ACTION_POINTER_DOWN;
 import static android.view.MotionEvent.ACTION_POINTER_UP;
 import static android.view.MotionEvent.ACTION_UP;
 
+import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_GESTURE;
+import static com.android.internal.app.AssistUtils.INVOCATION_TYPE_KEY;
 import static com.android.launcher3.Utilities.squaredHypot;
 
 import android.animation.Animator;
@@ -64,8 +66,6 @@ public class AssistantInputConsumer extends DelegateInputConsumer {
     private static final String OPA_BUNDLE_TRIGGER = "triggered_by";
     // From //java/com/google/android/apps/gsa/assistant/shared/proto/opa_trigger.proto.
     private static final int OPA_BUNDLE_TRIGGER_DIAG_SWIPE_GESTURE = 83;
-    private static final String INVOCATION_TYPE_KEY = "invocation_type";
-    private static final int INVOCATION_TYPE_GESTURE = 1;
 
     private final PointF mDownPos = new PointF();
     private final PointF mLastPos = new PointF();
diff --git a/quickstep/src/com/android/quickstep/util/SurfaceTransactionApplier.java b/quickstep/src/com/android/quickstep/util/SurfaceTransactionApplier.java
index 3b4fd31fa5..3b1c150563 100644
--- a/quickstep/src/com/android/quickstep/util/SurfaceTransactionApplier.java
+++ b/quickstep/src/com/android/quickstep/util/SurfaceTransactionApplier.java
@@ -22,10 +22,10 @@ import android.os.Message;
 import android.view.SurfaceControl;
 import android.view.SurfaceControl.Transaction;
 import android.view.View;
+import android.view.ViewRootImpl;
 
 import com.android.quickstep.RemoteAnimationTargets.ReleaseCheck;
 import com.android.systemui.shared.system.SyncRtSurfaceTransactionApplierCompat.SurfaceParams;
-import com.android.systemui.shared.system.ViewRootImplCompat;
 
 import java.util.function.Consumer;
 
@@ -41,7 +41,7 @@ public class SurfaceTransactionApplier extends ReleaseCheck {
     private static final int MSG_UPDATE_SEQUENCE_NUMBER = 0;
 
     private final SurfaceControl mBarrierSurfaceControl;
-    private final ViewRootImplCompat mTargetViewRootImpl;
+    private final ViewRootImpl mTargetViewRootImpl;
     private final Handler mApplyHandler;
 
     private int mLastSequenceNumber = 0;
@@ -50,8 +50,8 @@ public class SurfaceTransactionApplier extends ReleaseCheck {
      * @param targetView The view in the surface that acts as synchronization anchor.
      */
     public SurfaceTransactionApplier(View targetView) {
-        mTargetViewRootImpl = new ViewRootImplCompat(targetView);
-        mBarrierSurfaceControl = mTargetViewRootImpl.getRenderSurfaceControl();
+        mTargetViewRootImpl = targetView.getViewRootImpl();
+        mBarrierSurfaceControl = mTargetViewRootImpl.getSurfaceControl();
         mApplyHandler = new Handler(this::onApplyMessage);
     }
 
@@ -109,7 +109,7 @@ public class SurfaceTransactionApplier extends ReleaseCheck {
         if (targetView == null) {
             // No target view, no applier
             callback.accept(null);
-        } else if (new ViewRootImplCompat(targetView).isValid()) {
+        } else if (targetView.isAttachedToWindow()) {
             // Already attached, we're good to go
             callback.accept(new SurfaceTransactionApplier(targetView));
         } else {
diff --git a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
index c3b166fada..adea1a40cf 100644
--- a/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
+++ b/quickstep/src/com/android/quickstep/views/FloatingWidgetBackgroundView.java
@@ -136,7 +136,7 @@ final class FloatingWidgetBackgroundView extends View {
     }
 
     /** Returns the maximum corner radius of {@param drawable}. */
-    private static float getMaxRadius(Drawable drawable) {
+    private static float getMaxRadius(@Nullable Drawable drawable) {
         if (!(drawable instanceof GradientDrawable)) return 0;
         float[] cornerRadii = ((GradientDrawable) drawable).getCornerRadii();
         float cornerRadius = ((GradientDrawable) drawable).getCornerRadius();
diff --git a/quickstep/src/com/android/quickstep/views/IconView.java b/quickstep/src/com/android/quickstep/views/IconView.java
index ccb1a991ea..5895c05dcd 100644
--- a/quickstep/src/com/android/quickstep/views/IconView.java
+++ b/quickstep/src/com/android/quickstep/views/IconView.java
@@ -87,6 +87,14 @@ public class IconView extends View {
         return mDrawable;
     }
 
+    public int getDrawableWidth() {
+        return mDrawableWidth;
+    }
+
+    public int getDrawableHeight() {
+        return mDrawableHeight;
+    }
+
     @Override
     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         super.onSizeChanged(w, h, oldw, oldh);
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index ddd2a8293f..4b9b8a4c55 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -2612,10 +2612,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                         clampToProgress(FINAL_FRAME, 0, 0.5f));
             });
         }
-        boolean isTaskInBottomGridRow = showAsGrid() && !mTopRowIdSet.contains(
-                taskView.getTaskViewId()) && taskView.getTaskViewId() != mFocusedTaskViewId;
         anim.setFloat(taskView, VIEW_ALPHA, 0,
-                clampToProgress(isTaskInBottomGridRow ? ACCEL : FINAL_FRAME, 0, 0.5f));
+                clampToProgress(isOnGridBottomRow(taskView) ? ACCEL : FINAL_FRAME, 0, 0.5f));
         FloatProperty<TaskView> secondaryViewTranslate =
                 taskView.getSecondaryDissmissTranslationProperty();
         int secondaryTaskDimension = mOrientationHandler.getSecondaryDimension(taskView);
@@ -4681,6 +4679,15 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         return position != -1 ? position : bottomRowIdArray.indexOf(taskView.getTaskViewId());
     }
 
+    /**
+     * @return true if the task in on the top of the grid
+     */
+    public boolean isOnGridBottomRow(TaskView taskView) {
+        return showAsGrid()
+                && !mTopRowIdSet.contains(taskView.getTaskViewId())
+                && taskView.getTaskViewId() != mFocusedTaskViewId;
+    }
+
     public Consumer<MotionEvent> getEventDispatcher(float navbarRotation) {
         float degreesRotated;
         if (navbarRotation == 0) {
diff --git a/quickstep/src/com/android/quickstep/views/TaskMenuViewWithArrow.kt b/quickstep/src/com/android/quickstep/views/TaskMenuViewWithArrow.kt
index cd1691ba53..06a579300a 100644
--- a/quickstep/src/com/android/quickstep/views/TaskMenuViewWithArrow.kt
+++ b/quickstep/src/com/android/quickstep/views/TaskMenuViewWithArrow.kt
@@ -45,7 +45,10 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
     companion object {
         const val TAG = "TaskMenuViewWithArrow"
 
-        fun showForTask(taskContainer: TaskIdAttributeContainer): Boolean {
+        fun showForTask(
+            taskContainer: TaskIdAttributeContainer,
+            alignSecondRow: Boolean = false
+        ): Boolean {
             val activity = BaseDraggingActivity
                 .fromContext<BaseDraggingActivity>(taskContainer.taskView.context)
             val taskMenuViewWithArrow = activity.layoutInflater
@@ -55,7 +58,7 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
                     false
                 ) as TaskMenuViewWithArrow<*>
 
-            return taskMenuViewWithArrow.populateAndShowForTask(taskContainer)
+            return taskMenuViewWithArrow.populateAndShowForTask(taskContainer, alignSecondRow)
         }
     }
 
@@ -78,6 +81,9 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
         CLOSE_FADE_DURATION = CLOSE_CHILD_FADE_DURATION
     }
 
+    private var alignSecondRow: Boolean = false
+    private val extraSpaceForSecondRowAlignment: Int
+        get() = if (alignSecondRow) optionMeasuredHeight else 0
     private val menuWidth = context.resources.getDimensionPixelSize(R.dimen.task_menu_width_grid)
 
     private lateinit var taskView: TaskView
@@ -91,6 +97,10 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
         else
             0
 
+    private var iconView: IconView? = null
+    private var scrim: View? = null
+    private val scrimAlpha = 0.8f
+
     override fun isOfType(type: Int): Boolean = type and TYPE_TASK_MENU != 0
 
     override fun getTargetObjectLocation(outPos: Rect?) {
@@ -112,18 +122,35 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
         optionLayout = findViewById(KtR.id.menu_option_layout)
     }
 
-    private fun populateAndShowForTask(taskContainer: TaskIdAttributeContainer): Boolean {
+    private fun populateAndShowForTask(
+        taskContainer: TaskIdAttributeContainer,
+        alignSecondRow: Boolean
+    ): Boolean {
         if (isAttachedToWindow) {
             return false
         }
 
         taskView = taskContainer.taskView
         this.taskContainer = taskContainer
+        this.alignSecondRow = alignSecondRow
         if (!populateMenu()) return false
+        addScrim()
         show()
         return true
     }
 
+    private fun addScrim() {
+        scrim = View(context).apply {
+            layoutParams = FrameLayout.LayoutParams(
+                FrameLayout.LayoutParams.MATCH_PARENT,
+                FrameLayout.LayoutParams.MATCH_PARENT
+            )
+            setBackgroundColor(Themes.getAttrColor(context, R.attr.overviewScrimColor))
+            alpha = 0f
+        }
+        popupContainer.addView(scrim)
+    }
+
     /** @return true if successfully able to populate task view menu, false otherwise
      */
     private fun populateMenu(): Boolean {
@@ -180,18 +207,50 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
     }
 
     override fun onCreateOpenAnimation(anim: AnimatorSet) {
-        anim.play(
-            ObjectAnimator.ofFloat(
-                taskContainer.thumbnailView, TaskThumbnailView.DIM_ALPHA,
-                TaskView.MAX_PAGE_SCRIM_ALPHA
+        scrim?.let {
+            anim.play(
+                ObjectAnimator.ofFloat(it, View.ALPHA, 0f, scrimAlpha)
+                    .setDuration(OPEN_DURATION.toLong())
             )
-        )
+        }
     }
 
     override fun onCreateCloseAnimation(anim: AnimatorSet) {
-        anim.play(
-            ObjectAnimator.ofFloat(taskContainer.thumbnailView, TaskThumbnailView.DIM_ALPHA, 0f)
-        )
+        scrim?.let {
+            anim.play(
+                ObjectAnimator.ofFloat(it, View.ALPHA, scrimAlpha, 0f)
+                    .setDuration(CLOSE_DURATION.toLong())
+            )
+        }
+    }
+
+    override fun closeComplete() {
+        super.closeComplete()
+        popupContainer.removeView(scrim)
+        popupContainer.removeView(iconView)
+    }
+
+    /**
+     * Copy the iconView from taskView to dragLayer so it can stay on top of the scrim.
+     * It needs to be called after [getTargetObjectLocation] because [mTempRect] needs to be
+     * populated.
+     */
+    private fun copyIconToDragLayer(insets: Rect) {
+        iconView = IconView(context).apply {
+            layoutParams = FrameLayout.LayoutParams(
+                taskContainer.iconView.width,
+                taskContainer.iconView.height
+            )
+            x = mTempRect.left.toFloat() - insets.left
+            y = mTempRect.top.toFloat() - insets.top
+            drawable = taskContainer.iconView.drawable
+            setDrawableSize(
+                taskContainer.iconView.drawableWidth,
+                taskContainer.iconView.drawableHeight
+            )
+        }
+
+        popupContainer.addView(iconView)
     }
 
     /**
@@ -217,7 +276,10 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
         val dragLayer: InsettableFrameLayout = popupContainer
         val insets = dragLayer.insets
 
-        // Put to the right of the icon if there is space, which means left aligned with the menu
+        copyIconToDragLayer(insets)
+
+        // Put this menu to the right of the icon if there is space,
+        // which means the arrow is left aligned with the menu
         val rightAlignedMenuStartX = mTempRect.left - widthWithArrow
         val leftAlignedMenuStartX = mTempRect.right + extraHorizontalSpace
         mIsLeftAligned = if (mIsRtl) {
@@ -229,18 +291,17 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
 
         var menuStartX = if (mIsLeftAligned) leftAlignedMenuStartX else rightAlignedMenuStartX
 
-        // Offset y so that the arrow and first row are center-aligned with the original icon.
+        // Offset y so that the arrow and row are center-aligned with the original icon.
         val iconHeight = mTempRect.height()
-        val optionHeight = optionMeasuredHeight
-        val yOffset = (optionHeight - iconHeight) / 2
-        var menuStartY = mTempRect.top - yOffset
+        val yOffset = (optionMeasuredHeight - iconHeight) / 2
+        var menuStartY = mTempRect.top - yOffset - extraSpaceForSecondRowAlignment
 
         // Insets are added later, so subtract them now.
         menuStartX -= insets.left
         menuStartY -= insets.top
 
-        setX(menuStartX.toFloat())
-        setY(menuStartY.toFloat())
+        x = menuStartX.toFloat()
+        y = menuStartY.toFloat()
 
         val lp = layoutParams as FrameLayout.LayoutParams
         val arrowLp = mArrow.layoutParams as FrameLayout.LayoutParams
@@ -251,7 +312,8 @@ class TaskMenuViewWithArrow<T : BaseDraggingActivity> : ArrowPopup<T> {
     override fun addArrow() {
         popupContainer.addView(mArrow)
         mArrow.x = getArrowX()
-        mArrow.y = y + (optionMeasuredHeight / 2) - (mArrowHeight / 2)
+        mArrow.y = y + (optionMeasuredHeight / 2) - (mArrowHeight / 2) +
+                extraSpaceForSecondRowAlignment
 
         updateArrowColor()
 
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 1ff2a88b31..e8077cf4a5 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -30,6 +30,7 @@ import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCH
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_TASK_LAUNCH_TAP;
 import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
 import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_UNDEFINED;
 
 import static java.lang.annotation.RetentionPolicy.SOURCE;
@@ -38,6 +39,7 @@ import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.AnimatorSet;
 import android.animation.ObjectAnimator;
+import android.annotation.IdRes;
 import android.app.ActivityOptions;
 import android.content.Context;
 import android.content.Intent;
@@ -840,7 +842,9 @@ public class TaskView extends FrameLayout implements Reusable {
         TaskIdAttributeContainer menuContainer =
                 mTaskIdAttributeContainer[iconView == mIconView ? 0 : 1];
         if (mActivity.getDeviceProfile().overviewShowAsGrid) {
-            return TaskMenuViewWithArrow.Companion.showForTask(menuContainer);
+            boolean alignSecondRow = getRecentsView().isOnGridBottomRow(menuContainer.getTaskView())
+                    && mActivity.getDeviceProfile().isLandscape;
+            return TaskMenuViewWithArrow.Companion.showForTask(menuContainer, alignSecondRow);
         } else {
             return TaskMenuView.showForTask(menuContainer);
         }
@@ -1302,10 +1306,14 @@ public class TaskView extends FrameLayout implements Reusable {
                         getContext().getText(R.string.accessibility_close)));
 
         final Context context = getContext();
-        // TODO(b/200609838) Determine which task to run A11y action on when in split screen
-        for (SystemShortcut s : TaskOverlayFactory.getEnabledShortcuts(this,
-                mActivity.getDeviceProfile(), mTaskIdAttributeContainer[0])) {
-            info.addAction(s.createAccessibilityAction(context));
+        for (TaskIdAttributeContainer taskContainer : mTaskIdAttributeContainer) {
+            if (taskContainer == null) {
+                continue;
+            }
+            for (SystemShortcut s : TaskOverlayFactory.getEnabledShortcuts(this,
+                    mActivity.getDeviceProfile(), taskContainer)) {
+                info.addAction(s.createAccessibilityAction(context));
+            }
         }
 
         if (mDigitalWellBeingToast.hasLimit()) {
@@ -1336,12 +1344,16 @@ public class TaskView extends FrameLayout implements Reusable {
             return true;
         }
 
-        // TODO(b/200609838) Determine which task to run A11y action on when in split screen
-        for (SystemShortcut s : TaskOverlayFactory.getEnabledShortcuts(this,
-                mActivity.getDeviceProfile(), mTaskIdAttributeContainer[0])) {
-            if (s.hasHandlerForAction(action)) {
-                s.onClick(this);
-                return true;
+        for (TaskIdAttributeContainer taskContainer : mTaskIdAttributeContainer) {
+            if (taskContainer == null) {
+                continue;
+            }
+            for (SystemShortcut s : TaskOverlayFactory.getEnabledShortcuts(this,
+                    mActivity.getDeviceProfile(), taskContainer)) {
+                if (s.hasHandlerForAction(action)) {
+                    s.onClick(this);
+                    return true;
+                }
             }
         }
 
@@ -1558,7 +1570,6 @@ public class TaskView extends FrameLayout implements Reusable {
                 mScale = previewWidth / (previewWidth + currentInsetsLeft + currentInsetsRight);
             }
         }
-
     }
 
     public class TaskIdAttributeContainer {
@@ -1567,6 +1578,8 @@ public class TaskView extends FrameLayout implements Reusable {
         private final IconView mIconView;
         /** Defaults to STAGE_POSITION_UNDEFINED if in not a split screen task view */
         private @SplitConfigurationOptions.StagePosition int mStagePosition;
+        @IdRes
+        private final int mA11yNodeId;
 
         public TaskIdAttributeContainer(Task task, TaskThumbnailView thumbnailView,
                 IconView iconView, int stagePosition) {
@@ -1574,6 +1587,8 @@ public class TaskView extends FrameLayout implements Reusable {
             this.mThumbnailView = thumbnailView;
             this.mIconView = iconView;
             this.mStagePosition = stagePosition;
+            this.mA11yNodeId = (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) ?
+                    R.id.split_bottomRight_appInfo : R.id.split_topLeft_appInfo;
         }
 
         public TaskThumbnailView getThumbnailView() {
@@ -1603,5 +1618,9 @@ public class TaskView extends FrameLayout implements Reusable {
         void setStagePosition(@SplitConfigurationOptions.StagePosition int stagePosition) {
             this.mStagePosition = stagePosition;
         }
+
+        public int getA11yNodeId() {
+            return mA11yNodeId;
+        }
     }
 }
diff --git a/res/values/id.xml b/res/values/id.xml
index ebc4075214..508caffd48 100644
--- a/res/values/id.xml
+++ b/res/values/id.xml
@@ -21,6 +21,10 @@
     <item type="id" name="view_type_widgets_list" />
     <item type="id" name="view_type_widgets_header" />
     <item type="id" name="view_type_widgets_search_header" />
+    <!--  Used for A11y actions in staged split to identify each task uniquely  -->
+    <item type="id" name="split_topLeft_appInfo" />
+    <item type="id" name="split_bottomRight_appInfo" />
+
 
     <!--  Do not change, must be kept in sync with sysui navbar button IDs for tests!  -->
     <item type="id" name="home" />
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 5f53d4e24a..868b5f39b8 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -40,9 +40,10 @@
     <!-- Options for recent tasks -->
     <!-- Title for an option to enter split screen mode for a given app -->
     <string name="recent_task_option_split_screen">Split screen</string>
-    <string translatable="false" name="split_screen_position_top">Split top</string>
-    <string translatable="false" name="split_screen_position_left">Split left</string>
-    <string translatable="false" name="split_screen_position_right">Split right</string>
+    <string name="split_screen_position_top">Split top</string>
+    <string name="split_screen_position_left">Split left</string>
+    <string name="split_screen_position_right">Split right</string>
+    <string name="split_app_info_accessibility">App info for %1$s</string>
 
     <!-- Widgets -->
     <!-- Message to tell the user to press and hold on a widget to add it [CHAR_LIMIT=50] -->
diff --git a/src/com/android/launcher3/popup/SystemShortcut.java b/src/com/android/launcher3/popup/SystemShortcut.java
index 5ebbc67b56..08d3779ab6 100644
--- a/src/com/android/launcher3/popup/SystemShortcut.java
+++ b/src/com/android/launcher3/popup/SystemShortcut.java
@@ -41,8 +41,8 @@ public abstract class SystemShortcut<T extends Context & ActivityContext> extend
         implements View.OnClickListener {
 
     private final int mIconResId;
-    private final int mLabelResId;
-    private final int mAccessibilityActionId;
+    protected final int mLabelResId;
+    protected int mAccessibilityActionId;
 
     protected final T mTarget;
     protected final ItemInfo mItemInfo;
@@ -142,11 +142,43 @@ public abstract class SystemShortcut<T extends Context & ActivityContext> extend
 
     public static class AppInfo<T extends Context & ActivityContext> extends SystemShortcut<T> {
 
+        @Nullable
+        private SplitAccessibilityInfo mSplitA11yInfo;
+
         public AppInfo(T target, ItemInfo itemInfo) {
             super(R.drawable.ic_info_no_shadow, R.string.app_info_drop_target_label, target,
                     itemInfo);
         }
 
+        /**
+         * Constructor used by overview for staged split to provide custom A11y information.
+         *
+         * Future improvements considerations:
+         * Have the logic in {@link #createAccessibilityAction(Context)} be moved to super
+         * call in {@link SystemShortcut#createAccessibilityAction(Context)} by having
+         * SystemShortcut be aware of TaskContainers and staged split.
+         * That way it could directly create the correct node info for any shortcut that supports
+         * split, but then we'll need custom resIDs for each pair of shortcuts.
+         */
+        public AppInfo(T target, ItemInfo itemInfo, SplitAccessibilityInfo accessibilityInfo) {
+            this(target, itemInfo);
+            mSplitA11yInfo = accessibilityInfo;
+            mAccessibilityActionId = accessibilityInfo.nodeId;
+        }
+
+        @Override
+        public AccessibilityNodeInfo.AccessibilityAction createAccessibilityAction(
+                Context context) {
+            if (mSplitA11yInfo != null && mSplitA11yInfo.containsMultipleTasks) {
+                String accessibilityLabel = context.getString(R.string.split_app_info_accessibility,
+                        mSplitA11yInfo.taskTitle);
+                return new AccessibilityNodeInfo.AccessibilityAction(mAccessibilityActionId,
+                        accessibilityLabel);
+            } else {
+                return super.createAccessibilityAction(context);
+            }
+        }
+
         @Override
         public void onClick(View view) {
             dismissTaskMenuView(mTarget);
@@ -156,6 +188,19 @@ public abstract class SystemShortcut<T extends Context & ActivityContext> extend
             mTarget.getStatsLogManager().logger().withItemInfo(mItemInfo)
                     .log(LAUNCHER_SYSTEM_SHORTCUT_APP_INFO_TAP);
         }
+
+        public static class SplitAccessibilityInfo {
+            public final boolean containsMultipleTasks;
+            public final CharSequence taskTitle;
+            public final int nodeId;
+
+            public SplitAccessibilityInfo(boolean containsMultipleTasks,
+                    CharSequence taskTitle, int nodeId) {
+                this.containsMultipleTasks = containsMultipleTasks;
+                this.taskTitle = taskTitle;
+                this.nodeId = nodeId;
+            }
+        }
     }
 
     public static final Factory<BaseDraggingActivity> INSTALL = (activity, itemInfo) -> {