CA 1956 then KE 852 at Beijing
WGN → Beijing → Seoul Incheon
Timetable, Beijing time
16:00CA 1956 from WGN at the gate
10:40KE 852 to Seoul Incheon leaves the gate
18 h 40 apart on the timetable, overnight
KE 852 leaves 18 h 40 after CA 1956 arrives on the timetable: more than half a day, so not a connection we count.