AA 2891 then AA 2910 at Atlanta
Miami → Atlanta → Chicago O'Hare
Timetable, Atlanta time
09:47AA 2891 from Miami at the gate
15:15AA 2910 to Chicago O'Hare leaves the gate
5 h 28 apart on the timetable
The last days
AA 2891 and AA 2910 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.