AV 6975 then QR 7784 at San Francisco
Vancouver → San Francisco → Dallas-Fort Worth
Timetable, San Francisco time
16:06AV 6975 from Vancouver at the gate
13:57QR 7784 to Dallas-Fort Worth leaves the gate
21 h 51 apart on the timetable, overnight
QR 7784 leaves 21 h 51 after AV 6975 arrives on the timetable: more than half a day, so not a connection we count.