I saw an obit in Variety online that didn't mention Covid:

Berline’s family posted on his Facebook page that he had been recovering from a stroke. “Byron suffered a stroke in the cerebellum which affected his coordination and vision. He was making improvements with his eyes and coordination, and getting stronger. After a few weeks he began aspirating food into his lungs which led to increased invasive treatments which he couldn’t recover from. Eventually his lungs gave up and so did his heart. He passed at 7:30 p.m. Saturday, July 10, as his band was going on stage at the Music Hall.”