FR 507 then UA 229 at Dublin
Bristol → Dublin → Washington
Timetable, Dublin time
20:30FR 507 from Bristol at the gate
12:05UA 229 to Washington leaves the gate
15 h 35 apart on the timetable, overnight
UA 229 leaves 15 h 35 after FR 507 arrives on the timetable: more than half a day, so not a connection we count.