KB 150 then TG 407 at Bangkok
Paro → Bangkok → Singapore
Timetable, Bangkok time
15:10KB 150 from Paro at the gate
14:40TG 407 to Singapore leaves the gate
23 h 30 apart on the timetable, overnight
TG 407 leaves 23 h 30 after KB 150 arrives on the timetable: more than half a day, so not a connection we count.