CM 2528 then DL 6939 at San Francisco
Ontario → San Francisco → Calgary
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
16:40DL 6939 to Calgary leaves the gate
20 h 30 apart on the timetable, overnight
DL 6939 leaves 20 h 30 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.