BA 1369 then BA 410 at Heathrow
Manchester → London → Valencia
Timetable, London time
16:05BA 1369 from Manchester at the gate
15:15BA 410 to Valencia leaves the gate
23 h 10 apart on the timetable, overnight
BA 410 leaves 23 h 10 after BA 1369 arrives on the timetable: more than half a day, so not a connection we count.