DL 823 then UA 1561 at San Francisco
Atlanta → San Francisco → San Diego
Timetable, San Francisco time
17:16DL 823 from Atlanta at the gatealso AF 2495, AM 3256, LA 6318
16:55UA 1561 to San Diego leaves the gatealso AC 4192, AZ 4504, EK 6380, VA 8231, LH 9202, NZ 9644
23 h 39 apart on the timetable, overnight
UA 1561 leaves 23 h 39 after DL 823 arrives on the timetable: more than half a day, so not a connection we count.