DL 2889 then AS 2009 at Seattle
Boston → Seattle → Vancouver
Timetable, Seattle time
22:05DL 2889 from Boston at the gate
19:57AS 2009 to Vancouver leaves the gate
21 h 52 apart on the timetable, overnight
AS 2009 leaves 21 h 52 after DL 2889 arrives on the timetable: more than half a day, so not a connection we count.