TK 1874 then GQ 671 at Istanbul
Milan → Istanbul → Athens
Timetable, Istanbul time
16:05TK 1874 from Milan at the gate
10:30GQ 671 to Athens leaves the gate
18 h 25 apart on the timetable, overnight
GQ 671 leaves 18 h 25 after TK 1874 arrives on the timetable: more than half a day, so not a connection we count.