Xperia 1V not passing sound to hearing aids

[TheCustomer]

I'm struggling to get Xperia 1V to pass call audio and stream music to my hearing aids
(Oticon mini rite)

The phone can do this - I've had it working after a series of pairing/unpairing/repairing. But I can't say what I did to get it working other than turn it on & off several times.
I then lost the ability when I'd connected by USB-C to a different sound output, my car, which was recognised as a headset.
The phone didn't revert to the previous working audio streaming setup after I disconnected from the car.

But it still detects and automatically connects to my hearing aids, and defaults calls to Bluetooth, which I then can't hear.
I've just switched from a Google Pixel, where the sound worked faultlessly, so stock Android 14 doesn't have these issues.

Any ideas on how to fix this?

What can I do to set 

[pa_jesss]

Sounds like your Xperia 1V is having trouble switching between audio outputs. Try unpairing your hearing aids, then clear the Bluetooth cache on your phone (go to Settings > Apps > Bluetooth > Clear Cache).

After that, restart both your phone and hearing aids, and pair them again. If it still doesn’t work, try turning off your car’s Bluetooth to force the phone to reconnect to your hearing aids. This should help reset the audio.