Fastest way to wirelessly go from AA to Car play & vice versa? Linux unit

I have a Linux rcd330 head unit and the unit will by default connect to the previously connected AA which is great when I'm driving but when my wife drives it's not intuitive because she uses car play. So she has to manually forget the device and reset it each time.

Even if my BT/Wifi is OFF and not in the area.

Is there a way around this?

I had same issue when I had an android headunit btw.