FR 665 then BA 833 at Dublin
Birmingham (UK) → Dublin → London Heathrow
Timetable, Dublin time
19:20FR 665 from Birmingham (UK) at the gate
15:50BA 833 to London Heathrow leaves the gate
20 h 30 apart on the timetable, overnight
BA 833 leaves 20 h 30 after FR 665 arrives on the timetable: more than half a day, so not a connection we count.