@initforthemusic , Ha, yup, I had heard that before! Diamond seemed SO out of place in that group of artists, pure showbiz schmaltz. I view him being there as Robbie doing not Neil, but himself a favour, bringing attention to Diamond in hopes the album he was producing for him at that time would therefore sell more copies. I think it sank without a trace.
Behind the scenes, the rehearsals for the show proved to be running long, so Robbie asked Levon to tell Muddy he was being cut from the lineup. Levon refused, telling Robbie if Muddy didn't perform, neither did he. My man!