TK 208 then SQ 223 at Changi
Istanbul → Singapore → Perth
Timetable, Singapore time
10:00TK 208 from Istanbul at the gate
09:30SQ 223 to Perth leaves the gate
23 h 30 apart on the timetable, overnight
SQ 223 leaves 23 h 30 after TK 208 arrives on the timetable: more than half a day, so not a connection we count.