AA 2491 then AA 2378 at O'Hare
Miami → Chicago → Dallas-Fort Worth
Timetable, Chicago time
07:47AA 2491 from Miami at the gate
08:30AA 2378 to Dallas-Fort Worth leaves the gate
43 min apart on the timetable
The last days
AA 2491 and AA 2378 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.