DL 3968 then AS 535 at Seattle
Vancouver → Seattle → Denver
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
10:06AS 535 to Denver leaves the gate
17 h 13 apart on the timetable, overnight
AS 535 leaves 17 h 13 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.