AA 1459 then AA 865 at Philadelphia
Hartford → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
07:19AA 1459 from Hartford at the gate
10:30AA 865 to Chicago O'Hare leaves the gate
3 h 11 apart on the timetable
The last days
AA 1459 and AA 865 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.