FR 5483 then IB 721 at Madrid
Porto → Madrid → London Heathrow
Timetable, Madrid time
01:15FR 5483 from Porto at the gate
15:50IB 721 to London Heathrow leaves the gatealso LA 1701, VY 5176, DT 6160, QR 6906, BA 7068, AA 8652
14 h 35 apart on the timetable
IB 721 leaves 14 h 35 after FR 5483 arrives on the timetable: more than half a day, so not a connection we count.