CA 1404 then KE 852 at Beijing
Kunming → Beijing → Seoul Incheon
Timetable, Beijing time
15:10CA 1404 from Kunming at the gate
10:40KE 852 to Seoul Incheon leaves the gate
19 h 30 apart on the timetable, overnight
KE 852 leaves 19 h 30 after CA 1404 arrives on the timetable: more than half a day, so not a connection we count.