FR 9612 then FR 8912 at Dublin
Rome → Dublin → Zagreb
Timetable, Dublin time
19:50FR 9612 from Rome at the gate
09:00FR 8912 to Zagreb leaves the gate
13 h 10 apart on the timetable, overnight
FR 8912 leaves 13 h 10 after FR 9612 arrives on the timetable: more than half a day, so not a connection we count.