[Nobby]

If it was part of the programme, he'd have said the exact same line even on the STV broadcast. He should've said "ITV1, STV and ITVX".

I'm 99% sure you are correct, although you'll notice we did only see The Chaser in close-up and one other shot where you couldn't see his mouth, so it's possible that The Oscars® promo was recorded later than the episode.

No one responded to him other than with laughter, which seems like a strange reaction to Wallace's informative IPP anyway.

With that being the case, it's possible but probably unlikely that a version mentioning STV and STV Player was also recorded.

You'd hope a version where he doesn't promote The Oscars® and instead says "After this on Challenge, there will be another old episode of The Chase or maybe Bullseye" instead.

What have ITV or Challenge done when they repeat other special episodes like the one referencing Prince Harry's wedding?