FR 509 then BA 829 at Dublin
Bristol → Dublin → London Heathrow
Timetable, Dublin time
20:10FR 509 from Bristol at the gate
11:00BA 829 to London Heathrow leaves the gate
14 h 50 apart on the timetable, overnight
BA 829 leaves 14 h 50 after FR 509 arrives on the timetable: more than half a day, so not a connection we count.