KE 852 then OZ 735 at Incheon
Beijing Capital → Seoul → Ho Chi Minh City
Timetable, Seoul time
21:55KE 852 from Beijing Capital at the gate
19:25OZ 735 to Ho Chi Minh City leaves the gate
21 h 30 apart on the timetable, overnight
OZ 735 leaves 21 h 30 after KE 852 arrives on the timetable: more than half a day, so not a connection we count.