native iOS app embedding Unreal

Hi everyone, I am on the quest of embedding UE in a native iOS view.

I have found several references to a BUILD_EMBEDDED_APP macro in the UE source code (LaunchIOS.h, IOSAppDelegate.cpp, IOSView.cpp, etc) that led me to think it may be possible to achieve it. I am recompiling my game project under Xcode with BUILD_EMBEDDED_APP turned on (Platform.h) to see what happens. It seems like I will also need to change/replace the IOSAppDelegate code to handle my native view(s).

Has anyone dug more into this yet ?