CA 1538 then KE 852 at Beijing
Nanchang → Beijing → Seoul Incheon
Timetable, Beijing time
14:25CA 1538 from Nanchang at the gate
10:40KE 852 to Seoul Incheon leaves the gate
20 h 15 apart on the timetable, overnight
KE 852 leaves 20 h 15 after CA 1538 arrives on the timetable: more than half a day, so not a connection we count.