U2 2323 then IB 5850 at Barcelona
London Luton → Barcelona → Birmingham (UK)
Timetable, Barcelona time
20:10U2 2323 from London Luton at the gate
11:25IB 5850 to Birmingham (UK) leaves the gatealso LL 5850, VY 7750, BA 8100
15 h 15 apart on the timetable, overnight
IB 5850 leaves 15 h 15 after U2 2323 arrives on the timetable: more than half a day, so not a connection we count.