AV 6985 then B6 1234 at San Francisco
Vancouver → San Francisco → Boston
Timetable, San Francisco time
16:06AV 6985 from Vancouver at the gate
14:50B6 1234 to Boston leaves the gate
22 h 44 apart on the timetable, overnight
B6 1234 leaves 22 h 44 after AV 6985 arrives on the timetable: more than half a day, so not a connection we count.