FR 157 then EI 51 at Dublin
Leeds → Dublin → Las Vegas
Timetable, Dublin time
21:55FR 157 from Leeds at the gate
15:15EI 51 to Las Vegas leaves the gate
17 h 20 apart on the timetable, overnight
EI 51 leaves 17 h 20 after FR 157 arrives on the timetable: more than half a day, so not a connection we count.