VZ 301 then TG 4 at Bangkok
Phuket → Bangkok → Udon Thani
Timetable, Bangkok time
13:15VZ 301 from Phuket at the gate
12:30TG 4 to Udon Thani leaves the gate
23 h 15 apart on the timetable, overnight
TG 4 leaves 23 h 15 after VZ 301 arrives on the timetable: more than half a day, so not a connection we count.