Don't know if anyone remembers but when the CITV Channel launched they had 'Saturday Showdown Extra' which ran after the main show. I only remember because I tuned in one time when the audio wasn't working (they went to a break and came back pretending it was still off as a joke).
Talking of spin-offs - when the Saturday Show first launched they had a couple of spin-offs with 'Saturday Show Extra' on the CBBC Channel which actually aired at the same time as the main show on CBBC One for some reason! And also 'The Saturday Show Remix' which was an edited repeat of the show broadcast later that night on the CBBC Channel.
Didn't one of them or possibly both simulcast the main show but with different cartoons on the channel.
I preferred the internet when it had a sense of humour.