KE 852 then KE 47 at Incheon
Beijing Capital → Seoul → Seattle
Timetable, Seoul time
21:55KE 852 from Beijing Capital at the gate
21:20KE 47 to Seattle leaves the gate
23 h 25 apart on the timetable, overnight
KE 47 leaves 23 h 25 after KE 852 arrives on the timetable: more than half a day, so not a connection we count.