AV 2183 then DL 860 at San Francisco
Vancouver → San Francisco → Boston
Timetable, San Francisco time
15:27AV 2183 from Vancouver at the gate
15:05DL 860 to Boston leaves the gate
23 h 38 apart on the timetable, overnight
DL 860 leaves 23 h 38 after AV 2183 arrives on the timetable: more than half a day, so not a connection we count.