AC 29 then AC 7310 at Vancouver
Beijing → Vancouver → Toronto
Timetable, Vancouver time
14:49AC 29 from Beijing at the gate
21:10AC 7310 to Toronto leaves the gate
6 h 21 apart on the timetable
The last days
AC 29 and AC 7310 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.