AV 6985 then UA 1496 at San Francisco
Vancouver → San Francisco → Boston
Timetable, San Francisco time
16:06AV 6985 from Vancouver at the gate
14:42UA 1496 to Boston leaves the gatealso VA 8307, NZ 9013
22 h 36 apart on the timetable, overnight
UA 1496 leaves 22 h 36 after AV 6985 arrives on the timetable: more than half a day, so not a connection we count.