AA 3086 then UA 6030 at Phoenix
Nashville → Phoenix → San Diego
Timetable, Phoenix time
16:46AA 3086 from Nashville at the gate
16:30UA 6030 to San Diego leaves the gate
23 h 44 apart on the timetable, overnight
UA 6030 leaves 23 h 44 after AA 3086 arrives on the timetable: more than half a day, so not a connection we count.