Curious about everyone's thoughts on a 'conflicting needs' situation

This happened the other day, and I’m curious about what the right answer would have been.

My husband and I went to a restaurant for lunch. It wasn’t crowded, but there was another party of about six people, three of whom were elderly. At least one of them must have had significant hearing loss, because all of them were basically shouting the entire time. Not out of anger, and not in the enthusiastic way some people do when they’re happy or excited. They were just carrying on a normal conversation very very loudly to make sure the HoH person/people in their party could hear them. Most of the shouting seemed to be directed towards one of the elderly people.

My new Spheres allowed me to block it out very effectively and converse with my husband at a normal-ish volume. I don’t think my older L90s could have handled it nearly as well. But if I hadn’t had expensive hearing aids with those features - or any hearing aids at all - there would have been no hope of me hearing anything over the other party. My choices would have been to ask them to please drastically lower the volume (which would have meant the HoH person/people in their party couldn’t hear anything), or to give up and leave. It was a small enough restaurant that moving wouldn’t have helped.

So what would the right answer be when you’ve got one person with hearing loss who can’t experience conversation without their party making far more noise than is typical for that setting, and another person with hearing issues who can’t experience conversation because the first person’s party is making far more noise than is typical for that setting? It’s a ‘conflicting needs’ situation that I’d never thought about before. Maybe there isn’t a right answer, but I’m curious about everyone’s thoughts.