BA 510 then FR 3079 at Lisbon
London Heathrow → Lisbon → Barcelona
Timetable, Lisbon time
17:55BA 510 from London Heathrow at the gate
15:40FR 3079 to Barcelona leaves the gate
21 h 45 apart on the timetable, overnight
FR 3079 leaves 21 h 45 after BA 510 arrives on the timetable: more than half a day, so not a connection we count.