FR 509 then UA 229 at Dublin
Bristol → Dublin → Washington
Timetable, Dublin time
19:50FR 509 from Bristol at the gate
12:05UA 229 to Washington leaves the gate
16 h 15 apart on the timetable, overnight
UA 229 leaves 16 h 15 after FR 509 arrives on the timetable: more than half a day, so not a connection we count.