UA 3377 then BR 658 at O'Hare
Columbus (Ohio) → Chicago → Toronto Pearson
Timetable, Chicago time
12:30UA 3377 from Columbus (Ohio) at the gate
15:10BR 658 to Toronto Pearson leaves the gate
2 h 40 apart on the timetable
The last days
UA 3377 and BR 658 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.