CA 1296 then KE 852 at Beijing
Urumqi → Beijing → Seoul Incheon
Timetable, Beijing time
14:10CA 1296 from Urumqi at the gate
10:40KE 852 to Seoul Incheon leaves the gate
20 h 30 apart on the timetable, overnight
KE 852 leaves 20 h 30 after CA 1296 arrives on the timetable: more than half a day, so not a connection we count.