Many thanks to my friend, Tom, for bringing this to my attention. I’d never seen it before.
Sydney mentions that he was still performing with the musical Funny Girl as Nick Arnstein, opposite Barbra Streisand as Fanny Brice. He had been nominated for a Tony for the role the previous year (he won the Tony in 1957 for Bells Are Ringing).
An interesting sidelight: This program aired nearly two weeks after the death of Sydney’s namesake, his uncle Syd Chaplin, who passed away on April 16th (Charlie’s birthday).