AA 5156 then AA 2576 at Charlotte
Allentown → Charlotte → Chicago O'Hare
Timetable, Charlotte time
13:46AA 5156 from Allentown at the gate
18:32AA 2576 to Chicago O'Hare leaves the gate
4 h 46 apart on the timetable
The last days
AA 5156 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.