Charlie just call or text.
Once you connect any device thru the USB port it becomes an intelligent connection.
From your steering wheel push speak button and say 'USB'. She will respond with 'USB please say a command'.
From there you can call out any genre, album, artist or track you want. It is all digitally encoded.
So you can say 'play genre rock' and everything on that device coded as rock will play.
Or you can ask for the above I said.
Streaming it Bluetooth allows you to play but you still have to use device itself to pick what you want.
What kind of dealer sends a customer down the road and doesn't train them on the tech? My minimum delivery for a car is an hour. With my Ford/Lincoln touch it's even longer. And then after that my dealership is the only one in Florida with a sync my ride coordinator who brings you back about a week later and personally trains you on your car.
You do know your car also has turn by turn voice guided navigation right?