VY 7756 then BA 1371 at Manchester
Barcelona → Manchester → London Heathrow
Timetable, Manchester time
18:50VY 7756 from Barcelona at the gate
16:10BA 1371 to London Heathrow leaves the gate
21 h 20 apart on the timetable, overnight
BA 1371 leaves 21 h 20 after VY 7756 arrives on the timetable: more than half a day, so not a connection we count.