EC 7198 then U2 2326 at Barcelona
Birmingham (UK) → Barcelona → London Luton
Timetable, Barcelona time
22:25EC 7198 from Birmingham (UK) at the gate
20:55U2 2326 to London Luton leaves the gate
22 h 30 apart on the timetable, overnight
U2 2326 leaves 22 h 30 after EC 7198 arrives on the timetable: more than half a day, so not a connection we count.