UA 3605 then AF 2104 at Newark
Toronto Pearson → New York → Atlanta
Timetable, New York time
11:30UA 3605 from Toronto Pearson at the gate
15:21AF 2104 to Atlanta leaves the gate
3 h 51 apart on the timetable
The last days
UA 3605 and AF 2104 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.