AV 2104 then DL 6939 at San Francisco
San Luis Obispo → San Francisco → Calgary
Timetable, San Francisco time
19:56AV 2104 from San Luis Obispo at the gate
16:40DL 6939 to Calgary leaves the gate
20 h 44 apart on the timetable, overnight
DL 6939 leaves 20 h 44 after AV 2104 arrives on the timetable: more than half a day, so not a connection we count.