Pixel 10a keeps losing the connection to Cochlear N8

I've got a Cochlear N8 and a GN Resound Nexus 9.

I recently bought a Pixel 10a that was on the list of devices "approved" by Cochlear.

The Nucleus Smart app can connect and stream to both devices but every couple of days the app says my N8 can't be detected. Often I only find out about it when I answer a phone call and I can only hear it through the hearing aid (about 20% of an ear's worth).

Steps that I take to fix the problem may some times work, sometimes I need to keep trying more radical things to get a working connection.

Turn the the N8 off/on.

Force close the Smart app/restart it.

Turn Bluetooth off/on.

Restart the phone.

Remove the devices from the app and the Bluetooth list and reinstall them.

Clear the cache and memory of the Smart app and reinstall both devices.

Remove the app from the phone and download a fresh copy.

Bang head against a wall and start the process again.

Does anyone have the same problem? Have you found a setting somewhere deep in the Bluetooth configuration that keeps the connection reliable? Should I have bought a Samsung S24 for the same price?