VZ 123 then KR 704 at Bangkok
Chiang Mai → Bangkok → Phnom Penh
Timetable, Bangkok time
20:55VZ 123 from Chiang Mai 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 VZ 123 arrives on the timetable: more than half a day, so not a connection we count.