FR 2191 then FR 255 at Dublin
Zagreb → Dublin → London Stansted
Timetable, Dublin time
18:50FR 2191 from Zagreb at the gate
17:15FR 255 to London Stansted leaves the gate
22 h 25 apart on the timetable, overnight
FR 255 leaves 22 h 25 after FR 2191 arrives on the timetable: more than half a day, so not a connection we count.