FR 574 then U2 2704 at Barcelona
Bologna → Barcelona → Bristol
Timetable, Barcelona time
16:30FR 574 from Bologna at the gate
10:50U2 2704 to Bristol leaves the gate
18 h 20 apart on the timetable, overnight
U2 2704 leaves 18 h 20 after FR 574 arrives on the timetable: more than half a day, so not a connection we count.