AA 9936 then AC 8909 at Toronto Pearson
Pittsburgh → Toronto → Chicago O'Hare
Timetable, Toronto time
11:10AA 9936 from Pittsburgh at the gate
16:30AC 8909 to Chicago O'Hare leaves the gate
5 h 20 apart on the timetable
The last days
AA 9936 and AC 8909 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.