www.youtube.com/watch?v=RQYvRF3K0FM&t=1h18m36s
At the speed of light, it should take 1.25 seconds for voice and video to go from the Moon to Earth, then 1.25 seconds back. But the questions and the responses are almost immediate.
There should be 1.25 seconds to Earth, then 1.25 seconds for a total of 2.5 seconds between the responses.
Apollo 16 - April 1972
John Young talks with Houston faster than the Speed of Light
https://www.youtube.com/watch?v=RQYvRF3K0FM
1:18:36
Apollo 16 converses too quickly
Houston : There is a rock on this rim, with some light on the top of it.
We'd like you to pick it up...
Astronaut: This one right here?
Houston : That's it.
Astronaut: This one right here?
Houston :That's it. You've go it right there.
But the response from Houston is almost immediate. They say this twice in fast succession - too fast for the speed of light.
http://www.lpi.usra.edu/lunar/documents/Apollo15VoiceTranscript-Geology.pdf Apollo 15 is available with times, but not Apollo 16
1:17:17 Young sets explosive charges near his fee, endangering his space suit with a single piece of shrapnel.
Same scene but "different" mountains, supposedly miles away.