AC 897 then AC 1988 at Toronto Pearson
Athens → Toronto → Ottawa
Timetable, Toronto time
16:35AC 897 from Athens at the gate
20:40AC 1988 to Ottawa leaves the gate
4 h 05 apart on the timetable
The last days
AC 897 and AC 1988 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.