AA 2767 then AA 2576 at Charlotte
Philadelphia → Charlotte → Chicago O'Hare
Timetable, Charlotte time
10:35AA 2767 from Philadelphia at the gate
18:40AA 2576 to Chicago O'Hare leaves the gate
8 h 05 apart on the timetable
The last days
AA 2767 and AA 2576 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.