FR 3881 then FR 831 at Dublin
Dubrovnik → Dublin → Venezia
Timetable, Dublin time
14:15FR 3881 from Dubrovnik at the gate
09:20FR 831 to Venezia leaves the gate
19 h 05 apart on the timetable, overnight
FR 831 leaves 19 h 05 after FR 3881 arrives on the timetable: more than half a day, so not a connection we count.