AA 548 then AA 744 at Charlotte
Jacksonville → Charlotte → Baltimore
Timetable, Charlotte time
10:03AA 548 from Jacksonville at the gate
15:50AA 744 to Baltimore leaves the gate
5 h 47 apart on the timetable
The last days
AA 548 and AA 744 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.