You can see the cue mark on the top right on a couple on the first frame, the black and white moving mark. that was used to mark transition from the network feed so local companies could do their adverts/promos.
they knew how much time each break was, so when the mark vanished, play your 2m tape, then back to network feed.
(, Sat 9 May 2026, 14:03, Reply)
(, Mon 11 May 2026, 20:48, Reply)