AA 337 then AA 1376 at Philadelphia
Salt Lake City → Philadelphia → Pittsburgh
Timetable, Philadelphia time
13:13AA 337 from Salt Lake City at the gate
19:28AA 1376 to Pittsburgh leaves the gate
6 h 15 apart on the timetable
The last days
AA 337 and AA 1376 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.