There's a slight edit point around the 21'30m mark, where contestant Vicki Edmonds is laughing with her head down, before cutting to a shot where she's partially looking up at Terry.
Contestant Vicki Edmonds, seemingly nervous, gets her own husband's name wrong.
The second "Supermatch Game" has an answer of (Blue) Moon, with the "Moon" being revealed upside down, and Lennie Bennett standing on his head to read it. Yet the exact same situation, complete with Lennie's reaction, also happened in the unscreened Unaired Pilot 2 (1978), suggesting that because it got a good response, it was deliberately repeated.
When John Inman is asked for a suggestion in the first "Supermatch Game", the camera is momentarily out of focus.
There's a big laugh from the studio audience around the 10'30m mark, though it's not clear what's the source of the laughter; either a disturbance offscreen, or something trimmed out in the edit.