AA 5515 then AA 815 at Charlotte
Dayton → Charlotte → Chicago O'Hare
Timetable, Charlotte time
19:30AA 5515 from Dayton at the gate
21:40AA 815 to Chicago O'Hare leaves the gate
2 h 10 apart on the timetable
The last days
AA 5515 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.