FR 456 then FR 672 at Dublin
Leeds → Dublin → Birmingham (UK)
Timetable, Dublin time
08:30FR 456 from Leeds at the gate
23:45FR 672 to Birmingham (UK) leaves the gate
15 h 15 apart on the timetable
FR 672 leaves 15 h 15 after FR 456 arrives on the timetable: more than half a day, so not a connection we count.