FR 4586 then IB 5414 at Barcelona
Porto → Barcelona → London Gatwick
Timetable, Barcelona time
21:10FR 4586 from Porto at the gate
15:05IB 5414 to London Gatwick leaves the gatealso LL 5414, VY 7618, BA 8072
17 h 55 apart on the timetable, overnight
IB 5414 leaves 17 h 55 after FR 4586 arrives on the timetable: more than half a day, so not a connection we count.