WN 550 then WN 3506 at Phoenix
Denver → Phoenix → San Diego
Timetable, Phoenix time
16:45WN 550 from Denver at the gate
16:00WN 3506 to San Diego leaves the gate
23 h 15 apart on the timetable, overnight
WN 3506 leaves 23 h 15 after WN 550 arrives on the timetable: more than half a day, so not a connection we count.