AS 607 then DL 3997 at Seattle
Ontario → Seattle → Portland (Oregon)
Timetable, Seattle time
08:51AS 607 from Ontario at the gate
20:58DL 3997 to Portland (Oregon) leaves the gate
12 h 07 apart on the timetable
DL 3997 leaves 12 h 07 after AS 607 arrives on the timetable: more than half a day, so not a connection we count.