FR 663 then BA 833 at Dublin
Birmingham (UK) → Dublin → London Heathrow
Timetable, Dublin time
19:55FR 663 from Birmingham (UK) at the gate
15:50BA 833 to London Heathrow leaves the gate
19 h 55 apart on the timetable, overnight
BA 833 leaves 19 h 55 after FR 663 arrives on the timetable: more than half a day, so not a connection we count.