AA 1691 then AA 3012 at O'Hare
Newark → Chicago → Pittsburgh
Timetable, Chicago time
16:11AA 1691 from Newark at the gate
17:00AA 3012 to Pittsburgh leaves the gate
49 min apart on the timetable
The last days
AA 1691 and AA 3012 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.