BA 476 then LL 5480 at Barcelona
London Heathrow → Barcelona → Nantes
Timetable, Barcelona time
11:25BA 476 from London Heathrow at the gate
10:15LL 5480 to Nantes leaves the gate
22 h 50 apart on the timetable, overnight
LL 5480 leaves 22 h 50 after BA 476 arrives on the timetable: more than half a day, so not a connection we count.