AV 2104 then UA 1780 at San Francisco
San Luis Obispo → San Francisco → Ontario
Timetable, San Francisco time
19:56AV 2104 from San Luis Obispo at the gate
18:50UA 1780 to Ontario leaves the gatealso AC 4423, AC 4548
22 h 54 apart on the timetable, overnight
UA 1780 leaves 22 h 54 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.