U2 2323 then W4 6022 at Barcelona
London Luton → Barcelona → Rome
Timetable, Barcelona time
20:10U2 2323 from London Luton at the gate
15:15W4 6022 to Rome leaves the gate
19 h 05 apart on the timetable, overnight
W4 6022 leaves 19 h 05 after U2 2323 arrives on the timetable: more than half a day, so not a connection we count.