Quick update, no idea if this will work but worth a try. If your resound TV steamer is connected via optical cable, go into settings on the TV, then "audio", then "audio output", then "TV speakers". If you choose the eARC or Optical output, it turns off the TV speakers. But the "TV speakers" setting supposedly looks like it keeps the optical output on at the same time. So maybe try that? We don't have the resound steamer for my folks to try yet, so I don't know if it will work.