FR 3881 then BA 4471 at Dublin
Dubrovnik → Dublin → London City
Timetable, Dublin time
23:05FR 3881 from Dubrovnik at the gate
19:15BA 4471 to London City leaves the gate
20 h 10 apart on the timetable, overnight
BA 4471 leaves 20 h 10 after FR 3881 arrives on the timetable: more than half a day, so not a connection we count.