WS 589 then AC 2446 at Toronto Pearson
Ottawa → Toronto → Montréal
Timetable, Toronto time
06:55WS 589 from Ottawa at the gate
11:00AC 2446 to Montréal leaves the gate
4 h 05 apart on the timetable
The last days
WS 589 and AC 2446 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.