AA 640 then AA 1889 at Charlotte
Denver → Charlotte → Jacksonville
Timetable, Charlotte time
19:36AA 640 from Denver at the gate
20:33AA 1889 to Jacksonville leaves the gate
57 min apart on the timetable
The last days
AA 640 and AA 1889 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.