I recently switched to direct streaming into my hearing aids (previously used an external device to do this) and one annoyance is my Pixel 3a regularly turning off the Bluetooth on its own so the streaming to hearing aids is disconnected.
I just went into Battery settings and turned off "Adaptive Preferences" to extend battery life as this is the only thing I can see that potentially would turn off Bluetooth without my doing it manually. I already had Battery Saver turned off.
This is more of an annoyance than anything but it makes a difference because I am more attentive to turning the sound off on my phone in certain settings if the sound is NOT streamed to my hearing aids.
I just went into Battery settings and turned off "Adaptive Preferences" to extend battery life as this is the only thing I can see that potentially would turn off Bluetooth without my doing it manually. I already had Battery Saver turned off.
This is more of an annoyance than anything but it makes a difference because I am more attentive to turning the sound off on my phone in certain settings if the sound is NOT streamed to my hearing aids.