[pers785]

So I prefer using my phone on a car mount for Google navigation. I was trying to figure out how to have the directions voiced over the car speakers and I can make that happen if I connect my phone as a device and enable it as the external device it is connected to. However that prevents me from listening to the radio. Is there a way to have radio enabled but have Google navigation directions interrupt the radio over the car speakers? I've messed with it for awhile and it is either impossible, or I am just missing something.

Thank