KR 721 then VZ 306 at Bangkok
Siem Reap → Bangkok → Phuket
Timetable, Bangkok time
17:05KR 721 from Siem Reap at the gate
15:25VZ 306 to Phuket leaves the gate
22 h 20 apart on the timetable, overnight
VZ 306 leaves 22 h 20 after KR 721 arrives on the timetable: more than half a day, so not a connection we count.