FR 11 then BA 827 at Dublin
Madrid → Dublin → London Heathrow
Timetable, Dublin time
20:45FR 11 from Madrid at the gate
15:10BA 827 to London Heathrow leaves the gate
18 h 25 apart on the timetable, overnight
BA 827 leaves 18 h 25 after FR 11 arrives on the timetable: more than half a day, so not a connection we count.