TR 671 then SQ 223 at Changi
Chiang Rai → Singapore → Perth
Timetable, Singapore time
19:40TR 671 from Chiang Rai at the gate
09:30SQ 223 to Perth leaves the gate
13 h 50 apart on the timetable, overnight
SQ 223 leaves 13 h 50 after TR 671 arrives on the timetable: more than half a day, so not a connection we count.