AC 1973 then AC 730 at Montréal
Quebec → Montréal → New York LaGuardia
Timetable, Montréal time
08:02AC 1973 from Quebec at the gate
13:05AC 730 to New York LaGuardia leaves the gate
5 h 03 apart on the timetable
The last days
AC 1973 and AC 730 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.