FR 153 then FR 506 at Dublin
Leeds → Dublin → Bristol
Timetable, Dublin time
21:35FR 153 from Leeds at the gate
14:20FR 506 to Bristol leaves the gate
16 h 45 apart on the timetable, overnight
FR 506 leaves 16 h 45 after FR 153 arrives on the timetable: more than half a day, so not a connection we count.