LL 5107 then FR 3140 at Barcelona
Prague → Barcelona → Luxembourg
Timetable, Barcelona time
13:15LL 5107 from Prague at the gate
06:25FR 3140 to Luxembourg leaves the gate
17 h 10 apart on the timetable, overnight
FR 3140 leaves 17 h 10 after LL 5107 arrives on the timetable: more than half a day, so not a connection we count.