TG 653 then KR 704 at Bangkok
Seoul → Bangkok → Phnom Penh
Timetable, Bangkok time
20:55TG 653 from Seoul at the gate
16:15KR 704 to Phnom Penh leaves the gate
19 h 20 apart on the timetable, overnight
KR 704 leaves 19 h 20 after TG 653 arrives on the timetable: more than half a day, so not a connection we count.