AC 575 then DL 3764 at Vancouver
Denver → Vancouver → Seattle (SEA)
Timetable, Vancouver time
11:25AC 575 from Denver at the gate
08:26DL 3764 to Seattle (SEA) leaves the gate
21 h 01 apart on the timetable, overnight
DL 3764 leaves 21 h 01 after AC 575 arrives on the timetable: more than half a day, so not a connection we count.