FR 11 then BA 831 at Dublin
Madrid → Dublin → London Heathrow
Timetable, Dublin time
20:45FR 11 from Madrid at the gate
13:35BA 831 to London Heathrow leaves the gate
16 h 50 apart on the timetable, overnight
BA 831 leaves 16 h 50 after FR 11 arrives on the timetable: more than half a day, so not a connection we count.