IB 5855 then U2 2324 at Barcelona
Manchester → Barcelona → London Luton
Timetable, Barcelona time
17:05IB 5855 from Manchester at the gatealso LL 5855, VY 7755, BA 8105
10:25U2 2324 to London Luton leaves the gate
17 h 20 apart on the timetable, overnight
U2 2324 leaves 17 h 20 after IB 5855 arrives on the timetable: more than half a day, so not a connection we count.