FR 552 then FR 5209 at Manchester
Dublin → Manchester → Valletta
Timetable, Manchester time
13:40FR 552 from Dublin at the gate
10:55FR 5209 to Valletta leaves the gate
21 h 15 apart on the timetable, overnight
FR 5209 leaves 21 h 15 after FR 552 arrives on the timetable: more than half a day, so not a connection we count.