AV 2104 then UA 8187 at San Francisco
San Luis Obispo → San Francisco → Washington National
Timetable, San Francisco time
19:56AV 2104 from San Luis Obispo at the gate
15:23UA 8187 to Washington National leaves the gate
19 h 27 apart on the timetable, overnight
UA 8187 leaves 19 h 27 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.