diff --git a/packages/react-native/ReactAndroid/api/ReactAndroid.api b/packages/react-native/ReactAndroid/api/ReactAndroid.api
index 7f2be705b81168..f1bff1dbed5d7e 100644
--- a/packages/react-native/ReactAndroid/api/ReactAndroid.api
+++ b/packages/react-native/ReactAndroid/api/ReactAndroid.api
@@ -154,6 +154,8 @@ public class com/facebook/react/ReactDelegate {
 	public fun onHostDestroy ()V
 	public fun onHostPause ()V
 	public fun onHostResume ()V
+	public fun onKeyDown (ILandroid/view/KeyEvent;)Z
+	public fun onKeyLongPress (I)Z
 	public fun onNewIntent (Landroid/content/Intent;)Z
 	public fun onWindowFocusChanged (Z)V
 	public fun shouldShowDevMenuOrReload (ILandroid/view/KeyEvent;)Z
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
index 7079133f7d5149..54022ed27d5918 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactActivityDelegate.java
@@ -147,17 +147,7 @@ public void onActivityResult(int requestCode, int resultCode, Intent data) {
   }
 
   public boolean onKeyDown(int keyCode, KeyEvent event) {
-    if (ReactFeatureFlags.enableBridgelessArchitecture) {
-      // TODO T156475655: support onKeyDown
-    } else {
-      if (getReactNativeHost().hasInstance()
-          && getReactNativeHost().getUseDeveloperSupport()
-          && keyCode == KeyEvent.KEYCODE_MEDIA_FAST_FORWARD) {
-        event.startTracking();
-        return true;
-      }
-    }
-    return false;
+    return mReactDelegate.onKeyDown(keyCode, event);
   }
 
   public boolean onKeyUp(int keyCode, KeyEvent event) {
@@ -165,17 +155,7 @@ public boolean onKeyUp(int keyCode, KeyEvent event) {
   }
 
   public boolean onKeyLongPress(int keyCode, KeyEvent event) {
-    if (ReactFeatureFlags.enableBridgelessArchitecture) {
-      // TODO T156475655: support onKeyLongPress
-    } else {
-      if (getReactNativeHost().hasInstance()
-          && getReactNativeHost().getUseDeveloperSupport()
-          && keyCode == KeyEvent.KEYCODE_MEDIA_FAST_FORWARD) {
-        getReactNativeHost().getReactInstanceManager().showDevOptionsDialog();
-        return true;
-      }
-    }
-    return false;
+    return mReactDelegate.onKeyLongPress(keyCode);
   }
 
   public boolean onBackPressed() {
diff --git a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactDelegate.java b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactDelegate.java
index 1cda3ab15411ce..97c4a70a3b6e0c 100644
--- a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactDelegate.java
+++ b/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/ReactDelegate.java
@@ -84,6 +84,7 @@ public ReactDelegate(
   public void onHostResume() {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
       if (mActivity instanceof DefaultHardwareBackBtnHandler) {
+        assert mReactHost != null : "Tried to access onHostResume while ReactHost is null";
         mReactHost.onHostResume(mActivity, (DefaultHardwareBackBtnHandler) mActivity);
       }
     } else {
@@ -102,6 +103,7 @@ public void onHostResume() {
 
   public void onHostPause() {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onHostPause while ReactHost is null";
       mReactHost.onHostPause(mActivity);
     } else {
       if (getReactNativeHost().hasInstance()) {
@@ -112,6 +114,7 @@ public void onHostPause() {
 
   public void onHostDestroy() {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onHostDestroy while ReactHost is null";
       mReactHost.onHostDestroy(mActivity);
     } else {
       if (mReactRootView != null) {
@@ -126,6 +129,7 @@ public void onHostDestroy() {
 
   public boolean onBackPressed() {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onBackPressed while ReactHost is null";
       mReactHost.onBackPressed();
       return true;
     } else {
@@ -139,6 +143,7 @@ public boolean onBackPressed() {
 
   public boolean onNewIntent(Intent intent) {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onNewIntent while ReactHost is null";
       mReactHost.onNewIntent(intent);
       return true;
     } else {
@@ -153,6 +158,7 @@ public boolean onNewIntent(Intent intent) {
   public void onActivityResult(
       int requestCode, int resultCode, Intent data, boolean shouldForwardToReactInstance) {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onActivityResult while ReactHost is null";
       mReactHost.onActivityResult(mActivity, requestCode, resultCode, data);
     } else {
       if (getReactNativeHost().hasInstance() && shouldForwardToReactInstance) {
@@ -165,6 +171,7 @@ public void onActivityResult(
 
   public void onWindowFocusChanged(boolean hasFocus) {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onWindowFocusChanged while ReactHost is null";
       mReactHost.onWindowFocusChange(hasFocus);
     } else {
       if (getReactNativeHost().hasInstance()) {
@@ -175,6 +182,7 @@ public void onWindowFocusChanged(boolean hasFocus) {
 
   public void onConfigurationChanged(Configuration newConfig) {
     if (ReactFeatureFlags.enableBridgelessArchitecture) {
+      assert mReactHost != null : "Tried to access onConfigurationChanged while ReactHost is null";
       mReactHost.onConfigurationChanged(Assertions.assertNotNull(mActivity));
     } else {
       if (getReactNativeHost().hasInstance()) {
@@ -184,6 +192,36 @@ public void onConfigurationChanged(Configuration newConfig) {
     }
   }
 
+  public boolean onKeyDown(int keyCode, KeyEvent event) {
+    if (keyCode == KeyEvent.KEYCODE_MEDIA_FAST_FORWARD
+        && ((ReactFeatureFlags.enableBridgelessArchitecture
+                && mReactHost != null
+                && mReactHost.getDevSupportManager() != null)
+            || (getReactNativeHost().hasInstance()
+                && getReactNativeHost().getUseDeveloperSupport()))) {
+      event.startTracking();
+      return true;
+    }
+    return false;
+  }
+
+  public boolean onKeyLongPress(int keyCode) {
+    if (keyCode == KeyEvent.KEYCODE_MEDIA_FAST_FORWARD) {
+      if (ReactFeatureFlags.enableBridgelessArchitecture
+          && mReactHost != null
+          && mReactHost.getDevSupportManager() != null) {
+        mReactHost.getDevSupportManager().showDevOptionsDialog();
+        return true;
+      } else {
+        if (getReactNativeHost().hasInstance() && getReactNativeHost().getUseDeveloperSupport()) {
+          getReactNativeHost().getReactInstanceManager().showDevOptionsDialog();
+          return true;
+        }
+      }
+    }
+    return false;
+  }
+
   public void loadApp() {
     loadApp(mMainComponentName);
   }