Yeah, just to pile on here, 10-12 minutes is painfully optimistic. The plane train alone will take you up to two minutes between concourses, so T to F alone can take you 10-12 minutes of train time. Getting to the plane train will take a *minimum* of 5 minutes plus wait time if you're at the far end of the concourse - and that's power walking. Same thing to get from the plane train to the concourse at F. So worst case scenario is probably closer to 25 minutes. Still impressive given the number of gates, but definitely different than 10 minutes. It would typically take you more than 10-12 minutes to just go from the south end of T to north end of A unless you're really booking it (i.e. all out run).