EI 564 then U2 2324 at Barcelona
Dublin → Barcelona → London Luton
Timetable, Barcelona time
20:25EI 564 from Dublin at the gate
10:35U2 2324 to London Luton leaves the gate
14 h 10 apart on the timetable, overnight
U2 2324 leaves 14 h 10 after EI 564 arrives on the timetable: more than half a day, so not a connection we count.