W9 5379 then FR 4585 at Barcelona
London Luton → Barcelona → Porto
Timetable, Barcelona time
11:55W9 5379 from London Luton at the gate
09:25FR 4585 to Porto leaves the gate
21 h 30 apart on the timetable, overnight
FR 4585 leaves 21 h 30 after W9 5379 arrives on the timetable: more than half a day, so not a connection we count.