As a young BBC TV Cameraman, (Crew 14, Dave Mutton Senior) I had the privilege of working on Apollo 13 coverage at TVC.
At one point during the coverage, when "nothing " was happening, most of the Crew went to the Restaurant.
No transmission at that point.
Of course...... that was when it all went pear shaped.
Manning the only live studio camera (as I recall) ... "Houston, we have a problem"

The crew were immediately called back from the Restaurant, and manned Cameras & Sound etc

That was a heart stopping moment.
What an introduction to live TV !

I do remember the really obvious graphics throughout, "the capsule is in the water !" etc

Most of us didn't go home when shift ended, we stayed on and watched the Apollo mission.

We saw a lot of  incoming feeds that were not broadcast.