Android Auto possible without enabling bluetooth?

:
Phoenix
:
2020 CX5 signature
I use my USB to connect to Android Auto. I almost always have my BT headset in and as such want to use that when making or receiving calls. However, when a call comes in it's routed through my car's system, then I have to hit the button to switch to phone, then on my phone I have to go to another menu to route it to my BT headset.

I've tried to un-connect/cancel BT from my phone to the car but that disables AA. Is there a way to USB my phone without it causing calls to be routed to the car's system.
 
:
2019 CX-5 GTR
I don't have access to my vehicle right now.. but reading this:

makes mention of pairing phone to vehicle via Bluetooth first, then using USB. I suggest UN-PAIRING the vehicle to the phone (make the phone forget it knows the vehicle is a Bluetooth device). Then plug in in USB for Android auto.. see what the behavior is then.
 
:
Phoenix
:
2020 CX5 signature
Yeah, upon reconnect to Android auto it either automatically or forces connection to Bluetooth
 
:
CX5 GT
wasn't there an option in the infotainment -bluetooth - your mobile device setting, to select only to be used for audio and not phone?