TK 2657 then GQ 671 at Istanbul
SXZ → Istanbul → Athens
Timetable, Istanbul time
17:00TK 2657 from SXZ at the gate
10:30GQ 671 to Athens leaves the gate
17 h 30 apart on the timetable, overnight
GQ 671 leaves 17 h 30 after TK 2657 arrives on the timetable: more than half a day, so not a connection we count.