AV 6975 then UA 630 at San Francisco
Vancouver → San Francisco → Chicago O'Hare
Timetable, San Francisco time
16:06AV 6975 from Vancouver at the gate
12:27UA 630 to Chicago O'Hare leaves the gatealso AC 5384, VA 8102, NZ 9305
20 h 21 apart on the timetable, overnight
UA 630 leaves 20 h 21 after AV 6975 arrives on the timetable: more than half a day, so not a connection we count.