AV 2104 then UA 1561 at San Francisco
San Luis Obispo → San Francisco → San Diego
Timetable, San Francisco time
19:56AV 2104 from San Luis Obispo at the gate
16:55UA 1561 to San Diego leaves the gatealso AC 4192, AZ 4504, EK 6380, VA 8231, LH 9202, NZ 9644
20 h 59 apart on the timetable, overnight
UA 1561 leaves 20 h 59 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.