The NASA videos which are supposed to be recording live conversations between the Houston Ground Control and the astronauts on the Moon have absolutely no delay between the astronauts and the mission control speaking.
But the Moon is about 230,000 miles away, getting close to a 500,000 mile distance for a round-trip audio to travel.
And the radio waves travel at the speed of light which is about 186,282 miles per second.
So 500,000 / 186,282 = about 2.7 seconds.
Say 3 seconds.
So if the astronauts were on the Moon there must be a 3 second delay in their communications...
But there is not...