I did.
My mother came home at about the same time as the Tim Conway and Bonnie Boland "SEX" bit and demanded to know what I had on. She made me change the channel at the last commercial break, so I never saw the last segment until last week.
Of course, there's stuff in the credits that I couldn't pick up back then (although I recognized then Bill Melendez's name on the animated segments from the Peanuts specials), including Albert Brooks as one of the writers (I recognized a couple of the other names--Bob wrote comedy bits for the DJs at KMPC, LA's big full service MOR radio station at the time, where Gary Owens worked, and Ed Hider was a jazz critic--the electronic music score was from the LA radio jingle firm of Hugh Heller and Bob Hamilton, who did KMPC's jingles). Hamilton Camp went on to be a reliable character actor, along with Mel Stewart, and Chuck McCann was already a minor legend in New York for his daily kids show on WNEW-TV. And Teresa Graves went on to "Laugh-In" and "Get Christie Love!" ("You're under arrest, sugah.").
There has to be some interesting stories about the making of the two episodes (Wiki's bio of Maura "The Body Politic" McGivney says that they filmed three more episodes that didn't get edited) and perhaps a mini-series, if those involved are able to tell them now.