AM 472 then AA 5252 at Houston
Mexico City → Houston → Washington National
Timetable, Houston time
09:38AM 472 from Mexico City at the gate
10:30AA 5252 to Washington National leaves the gate
52 min apart on the timetable
The last days
AM 472 and AA 5252 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.