W9 5377 then FR 6559 at Barcelona
London Luton → Barcelona → Liverpool
Timetable, Barcelona time
15:25W9 5377 from London Luton at the gate
12:50FR 6559 to Liverpool leaves the gate
21 h 25 apart on the timetable, overnight
FR 6559 leaves 21 h 25 after W9 5377 arrives on the timetable: more than half a day, so not a connection we count.