I have benefited from what capt Krem is talking about in the past.
It was all legit though. We pushed, then got a taxi clearance before 2300, then on the taxi had a fault with the aircraft. We returned, to the apron, not the bay, thus not requiring another taxi clearance (at the advice of the helpful ATC). Got the problem fixed, then taxied again and finally departed well after 2300. It was all kosher and worked well. Many thanks to the ATC involved!!