AA 3004 then AA 2037 at Charlotte
Miami → Charlotte → Memphis
Timetable, Charlotte time
08:25AA 3004 from Miami at the gate
09:05AA 2037 to Memphis leaves the gate
40 min apart on the timetable
The last days
AA 3004 and AA 2037 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.