IB 5403 then QR 4704 at Barcelona
London Gatwick → Barcelona → Porto
Timetable, Barcelona time
16:15IB 5403 from London Gatwick at the gatealso LL 5403, VY 7607, BA 8061
08:35QR 4704 to Porto leaves the gate
16 h 20 apart on the timetable, overnight
QR 4704 leaves 16 h 20 after IB 5403 arrives on the timetable: more than half a day, so not a connection we count.