AA 387 then AA 5506 at Charlotte
Detroit → Charlotte → Memphis
Timetable, Charlotte time
08:06AA 387 from Detroit at the gate
12:22AA 5506 to Memphis leaves the gate
4 h 16 apart on the timetable
The last days
AA 387 and AA 5506 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.