AA 1980 then AA 865 at Philadelphia
Miami → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
23:53AA 1980 from Miami at the gate
10:30AA 865 to Chicago O'Hare leaves the gate
10 h 37 apart on the timetable, overnight
The last days
AA 1980 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.