AA 5477 then AC 740 at O'Hare
Madison → Chicago → Toronto Pearson
Timetable, Chicago time
08:50AA 5477 from Madison at the gate
19:35AC 740 to Toronto Pearson leaves the gate
10 h 45 apart on the timetable
The last days
AA 5477 and AC 740 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.