FR 1980 then FR 7072 at Dublin
Riga → Dublin → Porto
Timetable, Dublin time
00:30FR 1980 from Riga at the gate
15:00FR 7072 to Porto leaves the gate
14 h 30 apart on the timetable
FR 7072 leaves 14 h 30 after FR 1980 arrives on the timetable: more than half a day, so not a connection we count.