Oh, I understand what you meant now. Yeah, having an empeg app for Android Auto would indeed then force me to choose between that, or Google Maps at any one time.
I had actually meant the first thing you responded to: being unable to play audio from the Bluetooth input while running the empeg screen controller app in Android Auto or in Apple Car Play.
But itís possible that Iím remembering wrongly how it works. I abandoned Apple Car Play fairly quickly because it had a certain concurrency issue (canít run Waze on my phone while controlling iTunes music on the car screen, I have to choose one or the other). Iím now no longer sure whether my car ALSO prevents concurrent audio from a different input source.