TG 402 then KR 704 at Bangkok
Singapore → Bangkok → Phnom Penh
Timetable, Bangkok time
09:35TG 402 from Singapore at the gate
22:20KR 704 to Phnom Penh leaves the gate
12 h 45 apart on the timetable
KR 704 leaves 12 h 45 after TG 402 arrives on the timetable: more than half a day, so not a connection we count.