AM 4431 then UA 1389 at San Francisco
Los Angeles → San Francisco → San Diego
Timetable, San Francisco time
23:21AM 4431 from Los Angeles at the gate
22:42UA 1389 to San Diego leaves the gatealso CM 2511, AC 4292, VA 8426, LH 9372, NZ 9584
23 h 21 apart on the timetable, overnight
UA 1389 leaves 23 h 21 after AM 4431 arrives on the timetable: more than half a day, so not a connection we count.