KE 2065 then KE 852 at Beijing
Jeju City → Beijing → Seoul Incheon
Timetable, Beijing time
17:25KE 2065 from Jeju City at the gate
10:40KE 852 to Seoul Incheon leaves the gate
17 h 15 apart on the timetable, overnight
KE 852 leaves 17 h 15 after KE 2065 arrives on the timetable: more than half a day, so not a connection we count.