He was on this, that I had never heard of.
https://en.wikipedia.org/wiki/Saturday_Night_Live_with_Howard_Cosell
Saturday Night Live with Howard Cosell is an American television variety show that aired on ABC from September 20, 1975, to January 17, 1976, hosted by Howard Cosell and executive-produced by Roone Arledge. The series ran for 18 episodes before being cancelled
I remember it. It was a curiosity of Cosell trying to be Ed Sullivan. Unlike the NBC version it was in prime time. It didn’t last long.