FR 651 then BA 835 at Dublin
Lisbon → Dublin → London Heathrow
Timetable, Dublin time
23:40FR 651 from Lisbon at the gate
18:35BA 835 to London Heathrow leaves the gate
18 h 55 apart on the timetable, overnight
BA 835 leaves 18 h 55 after FR 651 arrives on the timetable: more than half a day, so not a connection we count.