I’m no audiologist, but I think your solution could be independent of BTE in both ears. I think the key will be finding some kind of streaming device for hearing on the phone and TV, PLUS program set-up to diminish background noise in any setting.
Not saying the latter (dedicated program) is a total fix, but I have “Speech in Loud Noise” as a dedicated program on my Phonak Lumity Life aids. When I’m in a noisy restaurant or place with LOTS of ambient noises, I put my aids into that dedicated program. I find it turns down the volume on EVERYTHING (too much), but if I turn the volume UP a couple steps on my aids, I can catch what folks are saying if they’re FACING ME.
I hope others will chime in here. I honestly don’t understand the logic or benefit of your having TWO different models by ONE hearing aid manufacturer. Yes, your hearing is different in each ear, but I thought most aids made for profound loss would be able to also accommodate little-to-moderate loss, too?
Good luck sorting this out - it’s an intriguing situation!