AA 3391 then AA 815 at Charlotte
Hilton Head → Charlotte → Chicago O'Hare
Timetable, Charlotte time
16:11AA 3391 from Hilton Head at the gate
21:40AA 815 to Chicago O'Hare leaves the gate
5 h 29 apart on the timetable
The last days
AA 3391 and AA 815 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.