I've run into a challenge where the phone refuses to activate Bluetooth tethering while the Wifi hotspot is active. Any ideas on how to get operational? Menu options have changed - Bluetooth tethering is now under the individual Bluetooth device you want to tether (i.e. CarDongle). It does connect to phone as an audio device.
Samsung Note10+ - SM-N975W
Android - 11
OneUI - 3.0
Kernel - 4.14.190-20587879-abN975WVLS5EUA1
Nevermind - I loaded Car Launcher Free and went through the backdoor. Doesn't work with exclusive bluetooth tethering set on CarDongle. I'll try another phone as well, once we get the system update next week.