OMG, anecdote: when I was a college Broadcasting major, I would anchor a taped campus news program, for airing over their CCTV to the dorms and common areas. The school also provided a copy to a local cable outlet.
To make for a realistic industry experience for us as students, we taped the program in real time, without interruption. We inserted timed break-aways for the cable people to use for advertising, and PSAs (public service announcements) for the campus, during which the cameras remained hot and the tape continued to run, as you saw in that clip.
One time a friend of mine was the floor manager (FM) who throws you your visual cues, especially essential before the days of earpieces for the anchor. During one break-away he got the warning over his headset from the control booth that we were coming out of the break, but he didn't give me the hand signal.
Instead, he said to me from off-camera: "Tom! You've got something hanging out of your nose!"
I stuck my finger up my nostril, just as he wickedly threw me the "on-air" cue, and the red on-air tally light on my camera lit up. I glanced over at the studio monitor, and there I was, picking my nose on-air.
The whole studio crew broke up laughing, myself included, and the director yelled to cut the tape. We could, in special cases, rewind the tape and start over from the last segment, since we weren't really live, which is what we did. The FM got into a little trouble over that, but he had a devilish sense of humor, and I got even with him in a later dramatic production. Fun times.