KE 852 then KE 689 at Incheon
Beijing Capital → Seoul → Phnom Penh
Timetable, Seoul time
21:55KE 852 from Beijing Capital at the gate
18:50KE 689 to Phnom Penh leaves the gate
20 h 55 apart on the timetable, overnight
KE 689 leaves 20 h 55 after KE 852 arrives on the timetable: more than half a day, so not a connection we count.