FR 6921 then FR 3193 at Barcelona
Dublin → Barcelona → Riga
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
19:40FR 3193 to Riga leaves the gate
22 h apart on the timetable, overnight
FR 3193 leaves 22 h after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.