AA 3239 then AA 2682 at O'Hare
Pittsburgh → Chicago → Boston
Timetable, Chicago time
16:54AA 3239 from Pittsburgh at the gate
19:59AA 2682 to Boston leaves the gate
3 h 05 apart on the timetable
The last days
AA 3239 and AA 2682 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.