EI 50 then FR 3977 at Dublin
Las Vegas → Dublin → Barcelona
Timetable, Dublin time
13:25EI 50 from Las Vegas at the gate
07:40FR 3977 to Barcelona leaves the gate
18 h 15 apart on the timetable, overnight
FR 3977 leaves 18 h 15 after EI 50 arrives on the timetable: more than half a day, so not a connection we count.