UA 1729 then WN 159 at Phoenix
Denver → Phoenix → San Diego
Timetable, Phoenix time
21:37UA 1729 from Denver at the gate
07:25WN 159 to San Diego leaves the gate
9 h 48 apart on the timetable, overnight
The last days
UA 1729 and WN 159 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.