KE 852 then KE 2179 at Incheon
Beijing Capital → Seoul → Kagoshima
Timetable, Seoul time
21:55KE 852 from Beijing Capital at the gate
14:40KE 2179 to Kagoshima leaves the gate
16 h 45 apart on the timetable, overnight
KE 2179 leaves 16 h 45 after KE 852 arrives on the timetable: more than half a day, so not a connection we count.