FR 3881 then BA 4473 at Dublin
Dubrovnik → Dublin → London City
Timetable, Dublin time
23:05FR 3881 from Dubrovnik at the gate
20:05BA 4473 to London City leaves the gate
21 h apart on the timetable, overnight
BA 4473 leaves 21 h after FR 3881 arrives on the timetable: more than half a day, so not a connection we count.