AS 503 then DL 3820 at Seattle
Austin → Seattle → Portland (Oregon)
Timetable, Seattle time
18:13AS 503 from Austin at the gate
17:48DL 3820 to Portland (Oregon) leaves the gate
23 h 35 apart on the timetable, overnight
DL 3820 leaves 23 h 35 after AS 503 arrives on the timetable: more than half a day, so not a connection we count.