FR 3881 then EI 81 at Dublin
Dubrovnik → Dublin → Pittsburgh
Timetable, Dublin time
23:05FR 3881 from Dubrovnik at the gate
16:15EI 81 to Pittsburgh leaves the gate
17 h 10 apart on the timetable, overnight
EI 81 leaves 17 h 10 after FR 3881 arrives on the timetable: more than half a day, so not a connection we count.