EC 7681 then BA 475 at Barcelona
Lisbon → Barcelona → London Heathrow
Timetable, Barcelona time
21:20EC 7681 from Lisbon at the gate
11:20BA 475 to London Heathrow leaves the gate
14 h apart on the timetable, overnight
BA 475 leaves 14 h after EC 7681 arrives on the timetable: more than half a day, so not a connection we count.