Bluethooth switching devices when using phone
How do I stop my iPhone 8 plus from switching from my Bluetooth headset to my vehicle audio system, when streaming music from the iPhone 8 plus to the vehicle when making or receiving calls?
For example: Headset and Vehicle are both connected to iPhone 8 plus via Bluetooth, iPhone 8plus is streaming to vehicle, call comes in, I change Bluetooth to headset and answer call, once call is connected the Bluetooth automatically switch’s back to vehicle. I have gone thru the previous answers on this question, which all say to go; Settings > General > Accessibility > Bluetooth Routing... I do not have an accessibility option in Settings > General...
Any suggestions?
iPhone 8 Plus, iOS 13