CA 4143 then KE 852 at Beijing
Chongqing → Beijing → Seoul Incheon
Timetable, Beijing time
18:00CA 4143 from Chongqing at the gate
10:40KE 852 to Seoul Incheon leaves the gate
16 h 40 apart on the timetable, overnight
KE 852 leaves 16 h 40 after CA 4143 arrives on the timetable: more than half a day, so not a connection we count.