EI 661 then FR 3977 at Dublin
Vienna → Dublin → Barcelona
Timetable, Dublin time
13:30EI 661 from Vienna at the gate
08:30FR 3977 to Barcelona leaves the gate
19 h apart on the timetable, overnight
FR 3977 leaves 19 h after EI 661 arrives on the timetable: more than half a day, so not a connection we count.