It depends on where they are in the world / season, for instance, TARAS was filming while TAR 10 was airing, and I think between the Malaysia and Hong Kong legs, the remaining teams got to watch Dustin & Kandice yield Lyn & Karlyn on TAR 10 (after they said they were Yielded, hence 'Yield Queens') so I'd assume crew (if they aren't doing anything) would watch too.