FR 661 then BA 831 at Dublin
Birmingham (UK) → Dublin → London Heathrow
Timetable, Dublin time
13:20FR 661 from Birmingham (UK) at the gate
13:00BA 831 to London Heathrow leaves the gate
23 h 40 apart on the timetable, overnight
BA 831 leaves 23 h 40 after FR 661 arrives on the timetable: more than half a day, so not a connection we count.