FR 6596 then BA 481 at Barcelona
Manchester → Barcelona → London Heathrow
Timetable, Barcelona time
21:05FR 6596 from Manchester at the gate
14:40BA 481 to London Heathrow leaves the gatealso IB 3663, AA 6819, VY 9559, QR 9800
17 h 35 apart on the timetable, overnight
BA 481 leaves 17 h 35 after FR 6596 arrives on the timetable: more than half a day, so not a connection we count.