LG 3751 then FR 1768 at Lisbon
Luxembourg → Lisbon → Valencia
Timetable, Lisbon time
17:10LG 3751 from Luxembourg at the gate
12:25FR 1768 to Valencia leaves the gate
19 h 15 apart on the timetable, overnight
FR 1768 leaves 19 h 15 after LG 3751 arrives on the timetable: more than half a day, so not a connection we count.