KE 852 then YP 111 at Incheon
Beijing Capital → Seoul → San Francisco
Timetable, Seoul time
21:55KE 852 from Beijing Capital at the gate
19:45YP 111 to San Francisco leaves the gate
21 h 50 apart on the timetable, overnight
YP 111 leaves 21 h 50 after KE 852 arrives on the timetable: more than half a day, so not a connection we count.