Originally Posted by
drewguy
That's tight but potentially doable with preclearance - UA begins boarding widebodies at 50 minutes before departure. Figure 15 minutes from stepping into terminal to get to your gate in C/D minimum (depending on arrival/departure gate the aerotrain or bus may be faster. There's a lot of walking involved, so if you're a slow walker add time.
Aren't all of the UA widebodies on Concourse C or the part of Concourse D that's close to C? It's doubtful the connection distance would be all that great and not require the train or tram.