I think it was Mearloaf that colasped. I believe in her last time on stage singing she was drunk and slurred her words. However, I saw a video which is believed to be her last on stage performance she did not sing but was on stage with her goddaughter or something where she didn’t appear to drunk or anything.
I read where Meatloaf collapsed but then he continued his show. Amy didn’t and her backup singers took over.