BA 484 then LA 5747 at Barcelona
London Heathrow → Barcelona → Manchester
Timetable, Barcelona time
16:35BA 484 from London Heathrow at the gate
11:15LA 5747 to Manchester leaves the gate
18 h 40 apart on the timetable, overnight
LA 5747 leaves 18 h 40 after BA 484 arrives on the timetable: more than half a day, so not a connection we count.