U2 8056 then A0 461 at Gatwick
Barcelona → London → Porto
Timetable, London time
16:05U2 8056 from Barcelona at the gate
15:31A0 461 to Porto leaves the gate
23 h 26 apart on the timetable, overnight
A0 461 leaves 23 h 26 after U2 8056 arrives on the timetable: more than half a day, so not a connection we count.