QR 3665 then BA 489 at Barcelona
Cagliari → Barcelona → London Heathrow
Timetable, Barcelona time
01:05QR 3665 from Cagliari at the gatealso LA 5788, IB 5799, LL 5799, VY 6115
20:10BA 489 to London Heathrow leaves the gate
19 h 05 apart on the timetable
BA 489 leaves 19 h 05 after QR 3665 arrives on the timetable: more than half a day, so not a connection we count.