FR 5911 then BA 839 at Dublin
Lanzarote → Dublin → London Heathrow
Timetable, Dublin time
00:40FR 5911 from Lanzarote at the gate
20:40BA 839 to London Heathrow leaves the gate
20 h apart on the timetable
BA 839 leaves 20 h after FR 5911 arrives on the timetable: more than half a day, so not a connection we count.