U2 2323 then W4 6018 at Barcelona
London Luton → Barcelona → Rome
Timetable, Barcelona time
20:10U2 2323 from London Luton at the gate
10:00W4 6018 to Rome leaves the gate
13 h 50 apart on the timetable, overnight
W4 6018 leaves 13 h 50 after U2 2323 arrives on the timetable: more than half a day, so not a connection we count.