I have the smart phone integration package on a 2019 GLC. Is there a way to play music via one USB port (using thumb drive) while using Android Auto (or Apple Car Play) with the other (for navigation for example)? Currently, if I am listening to music via the thumb drive and switch over to the Android Auto interface, the music turns off. I can listen to the radio concurrent to Android Auto usage but can’t listen to music via the thumb drive when doing so. Is there a workaround or am I missing something? Thanks!