TK 1354 then GQ 671 at Istanbul
Luxembourg → Istanbul → Athens
Timetable, Istanbul time
16:00TK 1354 from Luxembourg at the gate
10:30GQ 671 to Athens leaves the gate
18 h 30 apart on the timetable, overnight
GQ 671 leaves 18 h 30 after TK 1354 arrives on the timetable: more than half a day, so not a connection we count.