TK 402 then TK 208 at Istanbul
St. Petersburg → Istanbul → Singapore
Timetable, Istanbul time
18:05TK 402 from St. Petersburg at the gate
17:15TK 208 to Singapore leaves the gate
23 h 10 apart on the timetable, overnight
TK 208 leaves 23 h 10 after TK 402 arrives on the timetable: more than half a day, so not a connection we count.