Having just returned from the USA, I was amazed how quickly they move aircraft there. One was just starting to roll, whilst we were being lined up. Cleared for takeoff as the other is just getting airborne.
Not like Australia where you are at the holding point, one is already upwind and turning, another aircraft on a 3nm final and told to wait.
They often had 3 runways operating the same time, including cross strips. Is it just a lack of ability in the system here in Oz or what?