QR 3760 then BA 483 at Barcelona
Paris Orly → Barcelona → London Heathrow
Timetable, Barcelona time
18:05QR 3760 from Paris Orly at the gatealso IB 5445, LL 5445, VY 8019
15:30BA 483 to London Heathrow leaves the gatealso IB 3780, AY 5938, QR 5984, AA 7061, VY 9561
21 h 25 apart on the timetable, overnight
BA 483 leaves 21 h 25 after QR 3760 arrives on the timetable: more than half a day, so not a connection we count.