DL 3913 then DL 533 at Seattle
Portland (Oregon) → Seattle → Detroit
Timetable, Seattle time
20:50DL 3913 from Portland (Oregon) at the gate
13:35DL 533 to Detroit leaves the gate
16 h 45 apart on the timetable, overnight
DL 533 leaves 16 h 45 after DL 3913 arrives on the timetable: more than half a day, so not a connection we count.