He says that the signal is bounced of a satellite at speed of light and there is no noticeable delay.
OK ... the operator notices something on the screen that he needs to respond to.
That's camera signal to satellite -> satellite to operator. How long does that take?
Then operator to satellite -> satellite to aircraft. How long?
All at the speed of light. If we can agree typical distances involved, then we can "do the math" (as they say).
Meanwhile, I'm guessing at results in milliseconds (or tens of milliseconds).
