TS 261 then AC 307 at Montréal
Barcelona → Montréal → Vancouver
Timetable, Montréal time
12:30TS 261 from Barcelona at the gate
16:35AC 307 to Vancouver leaves the gate
4 h 05 apart on the timetable
The last days
TS 261 and AC 307 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.