VZ 109 then KR 704 at Bangkok
Chiang Mai → Bangkok → Phnom Penh
Timetable, Bangkok time
18:40VZ 109 from Chiang Mai at the gate
16:15KR 704 to Phnom Penh leaves the gate
21 h 35 apart on the timetable, overnight
KR 704 leaves 21 h 35 after VZ 109 arrives on the timetable: more than half a day, so not a connection we count.