AC 405 then AC 640 at Toronto Pearson
Montréal → Toronto → Saint John
Timetable, Toronto time
10:46AC 405 from Montréal at the gate
14:05AC 640 to Saint John leaves the gate
3 h 19 apart on the timetable
The last days
AC 405 and AC 640 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.