KE 47 then DL 533 at Seattle
Seoul → Seattle → Detroit
Timetable, Seattle time
14:10KE 47 from Seoul at the gate
13:35DL 533 to Detroit leaves the gate
23 h 25 apart on the timetable, overnight
DL 533 leaves 23 h 25 after KE 47 arrives on the timetable: more than half a day, so not a connection we count.