W9 5379 then FR 2507 at Barcelona
London Luton → Barcelona → Cologne
Timetable, Barcelona time
11:55W9 5379 from London Luton at the gate
08:30FR 2507 to Cologne leaves the gate
20 h 35 apart on the timetable, overnight
FR 2507 leaves 20 h 35 after W9 5379 arrives on the timetable: more than half a day, so not a connection we count.