EW 520 then FR 3140 at Barcelona
Cologne → Barcelona → Luxembourg
Timetable, Barcelona time
14:45EW 520 from Cologne at the gate
06:25FR 3140 to Luxembourg leaves the gate
15 h 40 apart on the timetable, overnight
FR 3140 leaves 15 h 40 after EW 520 arrives on the timetable: more than half a day, so not a connection we count.