FR 652 then LG 3754 at Lisbon
Dublin → Lisbon → Luxembourg
Timetable, Lisbon time
21:35FR 652 from Dublin at the gate
18:55LG 3754 to Luxembourg leaves the gate
21 h 20 apart on the timetable, overnight
LG 3754 leaves 21 h 20 after FR 652 arrives on the timetable: more than half a day, so not a connection we count.