WN 254 then WN 2265 at Phoenix
Atlanta → Phoenix → Denver
Timetable, Phoenix time
08:15WN 254 from Atlanta at the gate
14:35WN 2265 to Denver leaves the gate
6 h 20 apart on the timetable
The last days
WN 254 and WN 2265 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.