WN 550 then UA 6030 at Phoenix
Denver → Phoenix → San Diego
Timetable, Phoenix time
16:45WN 550 from Denver at the gate
16:30UA 6030 to San Diego leaves the gate
23 h 45 apart on the timetable, overnight
UA 6030 leaves 23 h 45 after WN 550 arrives on the timetable: more than half a day, so not a connection we count.