Saw The Ramones c1977 at Hull University. All songs were 3 mins maximum, no gaps in between them (or any audience interaction unsurprisingly) and after maybe 10 or 12 of them they were gone. If they did 40mins I’d have been amazed, but TBH that was more than enough for me. Fortunately I’d blagged tickets from the record company so didn’t feel shortchanged.