AC 2339 then VS 148 at Toronto Pearson
Saint John → Toronto → London Heathrow
Timetable, Toronto time
15:10AC 2339 from Saint John at the gate
21:45VS 148 to London Heathrow leaves the gate
6 h 35 apart on the timetable
The last days
AC 2339 and VS 148 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.