My mom has hearing aids and every time she’s in the car it makes a chirp beeping sound, kind of like a connecting sound except it does it every so often when she drives. It doesn’t do it when she turns off the Bluetooth from her phone. She’s had her hearing aids checked out. It’s either a phone or car issue connection. Can anyone help?

So when I'm wireless or wired to my car, android auto with navigation and music all working fine, driving down the road.

This has happened on any make or model vehicle that I can connect my phone/Ha's/A.A. to regardless of make or model.

Randomly though more often when someone calls in the middle or I try to make a phone call, my hearing aids will ding like they've lost or gained a connection and then Android Auto goes berzerk. The song will skip like I'm listening to a vinyl record. Navigation will get caught in a stuttering loop, and the phone call goes... nowhere. It'll say on my phone that I'm connected to my hearing aids for the call, but they're not coming through, nor the car, nor the phone handset itself. This is a problem that is getting worse and worse over time and I don't know what to do. Currently when this happens, I have to restart my phone mid-drive and cross my fingers.

I have:
Phonak audeo P50 hearing aids. (These are not connect to my car/head unit in any way.)

Coros Pace 3 smart watch (Not always involved, but seems to increase the odds of this happening.

Google pixel 6

I'm dying for suggestions to fix this. I drive for a part time job and find myself in sticky situations over this almost daily.