FR 651 then BA 831 at Dublin
Lisbon → Dublin → London Heathrow
Timetable, Dublin time
00:55FR 651 from Lisbon at the gate
13:00BA 831 to London Heathrow leaves the gate
12 h 05 apart on the timetable
BA 831 leaves 12 h 05 after FR 651 arrives on the timetable: more than half a day, so not a connection we count.