FR 6839 then FR 892 at Manchester
Prague → Manchester → Knock
Timetable, Manchester time
16:40FR 6839 from Prague at the gate
10:15FR 892 to Knock leaves the gate
17 h 35 apart on the timetable, overnight
FR 892 leaves 17 h 35 after FR 6839 arrives on the timetable: more than half a day, so not a connection we count.