FR 657 then BA 391 at Brussels
Dublin → Brussels → London Heathrow
Timetable, Brussels time
15:50FR 657 from Dublin at the gate
14:00BA 391 to London Heathrow leaves the gate
22 h 10 apart on the timetable, overnight
BA 391 leaves 22 h 10 after FR 657 arrives on the timetable: more than half a day, so not a connection we count.