FR 1980 then FR 3880 at Dublin
Riga → Dublin → Dubrovnik
Timetable, Dublin time
00:30FR 1980 from Riga at the gate
16:00FR 3880 to Dubrovnik leaves the gate
15 h 30 apart on the timetable
FR 3880 leaves 15 h 30 after FR 1980 arrives on the timetable: more than half a day, so not a connection we count.