U2 2705 then QR 3771 at Barcelona
Bristol → Barcelona → Porto
Timetable, Barcelona time
21:10U2 2705 from Bristol at the gate
18:35QR 3771 to Porto leaves the gatealso IB 5094, LL 5094
21 h 25 apart on the timetable, overnight
QR 3771 leaves 21 h 25 after U2 2705 arrives on the timetable: more than half a day, so not a connection we count.