WN 1663 then WN 2608 at Phoenix
Houston Hobby → Phoenix → Denver
Timetable, Phoenix time
16:55WN 1663 from Houston Hobby at the gate
22:40WN 2608 to Denver leaves the gate
5 h 45 apart on the timetable
The last days
WN 1663 and WN 2608 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.