UA 228 then FR 152 at Dublin
Washington → Dublin → Leeds
Timetable, Dublin time
10:20UA 228 from Washington at the gate
07:25FR 152 to Leeds leaves the gate
21 h 05 apart on the timetable, overnight
FR 152 leaves 21 h 05 after UA 228 arrives on the timetable: more than half a day, so not a connection we count.