WN 2144 then WN 577 at Phoenix
Tampa → Phoenix → Las Vegas
Timetable, Phoenix time
12:30WN 2144 from Tampa at the gate
12:55WN 577 to Las Vegas leaves the gate
25 min apart on the timetable
The last days
WN 2144 and WN 577 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.