CX 7854 then DL 6939 at San Francisco
Seattle → San Francisco → Calgary
Timetable, San Francisco time
20:47CX 7854 from Seattle at the gate
16:40DL 6939 to Calgary leaves the gate
19 h 53 apart on the timetable, overnight
DL 6939 leaves 19 h 53 after CX 7854 arrives on the timetable: more than half a day, so not a connection we count.