CA 1715 then KE 852 at Beijing
Hangzhou → Beijing → Seoul Incheon
Timetable, Beijing time
16:30CA 1715 from Hangzhou at the gate
10:40KE 852 to Seoul Incheon leaves the gate
18 h 10 apart on the timetable, overnight
KE 852 leaves 18 h 10 after CA 1715 arrives on the timetable: more than half a day, so not a connection we count.