WN 254 then WN 277 at Phoenix
Atlanta → Phoenix → Austin
Timetable, Phoenix time
08:05WN 254 from Atlanta at the gate
09:00WN 277 to Austin leaves the gate
55 min apart on the timetable
The last days
WN 254 and WN 277 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.