AC 8501 then F9 9072 at Atlanta
Toronto → Atlanta → Montgomery
Timetable, Atlanta time
11:46AC 8501 from Toronto at the gate
15:55F9 9072 to Montgomery leaves the gate
4 h 09 apart on the timetable
The last days
AC 8501 and F9 9072 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.