TK 209 then TK 2170 at Istanbul
Singapore → Istanbul → Ankara
Timetable, Istanbul time
18:30TK 209 from Singapore at the gate
18:00TK 2170 to Ankara leaves the gate
23 h 30 apart on the timetable, overnight
TK 2170 leaves 23 h 30 after TK 209 arrives on the timetable: more than half a day, so not a connection we count.