My father has hearing loss and would like to have a headset to listen to audio from TV. My mother would still like for the TV audio to play through TV speakers in order for her and others to hear at the same time. Please let me know if you have a recommendation on how to achieve this for them. TIA

Went through this with my Mom. It all depends on the TV and any audio receiver you might have connected. In my case, my mom had an older 4k TV which still had separate audio out RCA jacks (the red and white colored ones). I got her an older version of these: Sony Wireless RF Headphones

I connected the base (which also acts as the charging stand for the headphones) to the audio out of the tv, and she was in business. The headphones had 2 key advantages. She had independent volume control on the headphones themselves and I found that RF headphones worked better than Bluetooth. Range was longer and she "liked the sound better".

Just my two cents.