AA 2500 then AA 6325 at O'Hare
Nashville → Chicago → Detroit
Timetable, Chicago time
17:25AA 2500 from Nashville at the gate
18:06AA 6325 to Detroit leaves the gate
41 min apart on the timetable
The last days
AA 2500 and AA 6325 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.