CA 1502 then KE 852 at Beijing
Shanghai Hongqiao → Beijing → Seoul Incheon
Timetable, Beijing time
14:40CA 1502 from Shanghai Hongqiao at the gate
10:40KE 852 to Seoul Incheon leaves the gate
20 h apart on the timetable, overnight
KE 852 leaves 20 h after CA 1502 arrives on the timetable: more than half a day, so not a connection we count.