AC 7072 then WN 4321 at Denver
Pittsburgh → Denver → Dallas
Timetable, Denver time
02:23AC 7072 from Pittsburgh at the gate
08:40WN 4321 to Dallas leaves the gate
6 h 17 apart on the timetable
The last days
AC 7072 and WN 4321 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.