CA 1842 then KE 852 at Beijing
Yangzhou → Beijing → Seoul Incheon
Timetable, Beijing time
11:25CA 1842 from Yangzhou at the gate
10:40KE 852 to Seoul Incheon leaves the gate
23 h 15 apart on the timetable, overnight
KE 852 leaves 23 h 15 after CA 1842 arrives on the timetable: more than half a day, so not a connection we count.