Originally Posted by
readywhenyouare
...probably another ten minutes pushback and taxi time, ... and then another 15 minutes taxi time upon arrival in ATL. At that point if you have a tight connection you might arrive in time to wave goodbye to your connecting flight.
I hope you know those 25 minutes are part of the scheduled departure and arrival times. The only event that creates a delay is late arriving equipment. The plane has to board, deplane, and taxi no matter what happens--on-time or not.