Bill Boggs has been interviewing people all over television for decades, often without proper notice. This video is a rather serious conversation he had with Neil Simon just before Simon's Chapter Two opened on Broadway. That would place this chat in late 1977.
If you watch it, you might keep in mind that Simon's marriage to actress Marsha Mason, which was the subtext of Chapter Two, had about three years left in it before they divorced. He also makes reference to the efforts for peace between Anwar Sadat and Menachem Begin which at the time of this interview looked like they were going to work out, too.