BA 486 then LA 5747 at Barcelona
London Heathrow → Barcelona → Manchester
Timetable, Barcelona time
18:30BA 486 from London Heathrow at the gate
11:15LA 5747 to Manchester leaves the gate
16 h 45 apart on the timetable, overnight
LA 5747 leaves 16 h 45 after BA 486 arrives on the timetable: more than half a day, so not a connection we count.