ok, say the departing a/c is lined up and ready, and it's been asked to taxi and vacate at the first intersection.
If they have been able to move at taxi speed and vacate safely before the inbound aircraft touched down, they probably could have initiated the TO roll and be airborne before the following a/c touched down.
Is this not allowed because in case of an aborted TO the following a/c could be too low to be instructed to go around ?
Working at GLA on the apron I have seen a couple of rotations of an a/c when the inbound is maybe 50 feet over the threshold
Thanks for the clarification
HH