FR 6921 then W6 2378 at Barcelona
Dublin → Barcelona → Budapest
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
20:50W6 2378 to Budapest leaves the gate
23 h 10 apart on the timetable, overnight
W6 2378 leaves 23 h 10 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.