AA 2286 then AA 2576 at Charlotte
Baltimore → Charlotte → Chicago O'Hare
Timetable, Charlotte time
14:58AA 2286 from Baltimore at the gate
18:40AA 2576 to Chicago O'Hare leaves the gate
3 h 42 apart on the timetable
The last days
AA 2286 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.