VA 8292 then DL 6939 at San Francisco
Seattle → San Francisco → Calgary
Timetable, San Francisco time
19:38VA 8292 from Seattle at the gate
16:40DL 6939 to Calgary leaves the gate
21 h 02 apart on the timetable, overnight
DL 6939 leaves 21 h 02 after VA 8292 arrives on the timetable: more than half a day, so not a connection we count.