AA 5132 then AA 3189 at Philadelphia
Pittsburgh → Philadelphia → Chicago O'Hare
Timetable, Philadelphia time
11:58AA 5132 from Pittsburgh at the gate
18:37AA 3189 to Chicago O'Hare leaves the gate
6 h 39 apart on the timetable
The last days
AA 5132 and AA 3189 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.