FR 665 then BA 831 at Dublin
Birmingham (UK) → Dublin → London Heathrow
Timetable, Dublin time
15:00FR 665 from Birmingham (UK) at the gate
13:05BA 831 to London Heathrow leaves the gate
22 h 05 apart on the timetable, overnight
BA 831 leaves 22 h 05 after FR 665 arrives on the timetable: more than half a day, so not a connection we count.