FR 4546 then IB 5416 at Barcelona
Porto → Barcelona → London Gatwick
Timetable, Barcelona time
20:40FR 4546 from Porto at the gate
17:05IB 5416 to London Gatwick leaves the gatealso LL 5416, VY 7620, BA 8074
20 h 25 apart on the timetable, overnight
IB 5416 leaves 20 h 25 after FR 4546 arrives on the timetable: more than half a day, so not a connection we count.