How do I stream TV sound to my HAs while spouse listens to TV at their volume?

Seriously? Well ok this will give you direct streaming to your hearing aids from your TV, while everyone else hears through the sound bar, actually depending on what sound bar you have you might even be able to plug the TV Connecter into that.

How many outputs have you got on the back of the TV, use one for the Phonak TV Connecter is the easiest, but HDMI splitters are available, use the link I posted to find out what cables are supplied with the TV Connecter to work out what you need.

Also you can use the search button from right here on hearingtracker to find quite a few posts on this very topic, check this one out you’ll find it interesting.