AC 1735 then AA 5532 at Houston
Toronto → Houston → Washington National
Timetable, Houston time
10:53AC 1735 from Toronto at the gate
17:20AA 5532 to Washington National leaves the gate
6 h 27 apart on the timetable
The last days
AC 1735 and AA 5532 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.