GQ 670 then TK 503 at Istanbul
Athens → Istanbul → Dakar
Timetable, Istanbul time
21:45GQ 670 from Athens at the gate
14:30TK 503 to Dakar leaves the gate
16 h 45 apart on the timetable, overnight
TK 503 leaves 16 h 45 after GQ 670 arrives on the timetable: more than half a day, so not a connection we count.