AA 2002 then UA 3305 at Charlotte
Des Moines → Charlotte → Pittsburgh
Timetable, Charlotte time
10:30AA 2002 from Des Moines at the gate
15:00UA 3305 to Pittsburgh leaves the gate
4 h 30 apart on the timetable
The last days
AA 2002 and UA 3305 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.