AA 1554 then AA 5078 at Charlotte
Jacksonville → Charlotte → Birmingham (Alabama)
Timetable, Charlotte time
11:20AA 1554 from Jacksonville at the gate
18:05AA 5078 to Birmingham (Alabama) leaves the gate
6 h 45 apart on the timetable
The last days
AA 1554 and AA 5078 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.