AA 3734 then AA 2372 at O'Hare
Lansing → Chicago → Dallas-Fort Worth
Timetable, Chicago time
06:05AA 3734 from Lansing at the gate
06:59AA 2372 to Dallas-Fort Worth leaves the gate
54 min apart on the timetable
The last days
AA 3734 and AA 2372 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.