The other day my mom was at our house, parked next to me. She got in her car to leave at the same time I did. I pulled out my phone and put on some music - noting that it was weird that I needed to do anything at all, typically it just resumes playing as soon as it connects to Bluetooth.
But I didn't get any audio. That's weird. Until she drove away and the music started playing through my phone's speaker a few seconds later, and I realized that it connected to the wrong head unit.
Buy two of the same headphone, watch it not work because the software differentiates on the label not the MAC, and never asks you or auto labels the one you connected to...
Not a BT problem so much as a bad software pattern. I solve this by naming my devices uniquely.
But I didn't get any audio. That's weird. Until she drove away and the music started playing through my phone's speaker a few seconds later, and I realized that it connected to the wrong head unit.