TR 671 then SQ 207 at Changi
Chiang Rai → Singapore → Melbourne
Timetable, Singapore time
19:40TR 671 from Chiang Rai at the gate
07:45SQ 207 to Melbourne leaves the gate
12 h 05 apart on the timetable, overnight
SQ 207 leaves 12 h 05 after TR 671 arrives on the timetable: more than half a day, so not a connection we count.