TK 1759 then FR 1791 at Lisbon
Istanbul → Lisbon → Luxembourg
Timetable, Lisbon time
15:10TK 1759 from Istanbul at the gate
15:00FR 1791 to Luxembourg leaves the gate
23 h 50 apart on the timetable, overnight
FR 1791 leaves 23 h 50 after TK 1759 arrives on the timetable: more than half a day, so not a connection we count.