AC 8873 then PD 277 at Toronto Pearson
Newark → Toronto → Calgary
Timetable, Toronto time
09:43AC 8873 from Newark at the gate
20:45PD 277 to Calgary leaves the gate
11 h 02 apart on the timetable
The last days
AC 8873 and PD 277 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.