BA 484 then QR 4704 at Barcelona
London Heathrow → Barcelona → Porto
Timetable, Barcelona time
16:00BA 484 from London Heathrow at the gatealso IB 3665, LA 5487, AA 6728, QR 8316, VY 9657
08:35QR 4704 to Porto leaves the gate
16 h 35 apart on the timetable, overnight
QR 4704 leaves 16 h 35 after BA 484 arrives on the timetable: more than half a day, so not a connection we count.