AV 6985 then DL 860 at San Francisco
Vancouver → San Francisco → Boston
Timetable, San Francisco time
16:06AV 6985 from Vancouver at the gate
15:05DL 860 to Boston leaves the gate
22 h 59 apart on the timetable, overnight
DL 860 leaves 22 h 59 after AV 6985 arrives on the timetable: more than half a day, so not a connection we count.