AA 2910 then AA 1368 at Atlanta
Chicago O'Hare → Atlanta → Miami
Timetable, Atlanta time
14:35AA 2910 from Chicago O'Hare at the gate
18:54AA 1368 to Miami leaves the gate
4 h 19 apart on the timetable
The last days
AA 2910 and AA 1368 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.