AA 2866 then AA 818 at Charlotte
Milwaukee → Charlotte → Chicago O'Hare
Timetable, Charlotte time
10:12AA 2866 from Milwaukee at the gate
11:02AA 818 to Chicago O'Hare leaves the gate
50 min apart on the timetable
The last days
AA 2866 and AA 818 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.