AA 3546 then AA 1683 at Detroit
Chicago O'Hare → Detroit → Charlotte
Timetable, Detroit time
09:27AA 3546 from Chicago O'Hare at the gate
13:49AA 1683 to Charlotte leaves the gate
4 h 22 apart on the timetable
The last days
AA 3546 and AA 1683 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.