FR 554 then FR 6842 at Manchester
Dublin → Manchester → Prague
Timetable, Manchester time
19:35FR 554 from Dublin at the gate
15:40FR 6842 to Prague leaves the gate
20 h 05 apart on the timetable, overnight
FR 6842 leaves 20 h 05 after FR 554 arrives on the timetable: more than half a day, so not a connection we count.