FR 6921 then FR 3129 at Barcelona
Dublin → Barcelona → Ibiza
Timetable, Barcelona time
12:00FR 6921 from Dublin at the gate
06:55FR 3129 to Ibiza leaves the gate
18 h 55 apart on the timetable, overnight
FR 3129 leaves 18 h 55 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.