AA 3340 then AC 740 at O'Hare
Nashville → Chicago → Toronto Pearson
Timetable, Chicago time
12:40AA 3340 from Nashville at the gate
19:35AC 740 to Toronto Pearson leaves the gate
6 h 55 apart on the timetable
The last days
AA 3340 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.