AV 2104 then UA 1577 at San Francisco
San Luis Obispo → San Francisco → San Diego
Timetable, San Francisco time
19:56AV 2104 from San Luis Obispo at the gate
18:55UA 1577 to San Diego leaves the gatealso LX 3310, AZ 4505, AC 5188, VA 8427, LH 9370
22 h 59 apart on the timetable, overnight
UA 1577 leaves 22 h 59 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.