FR 6843 then FR 5209 at Manchester
Prague → Manchester → Valletta
Timetable, Manchester time
20:30FR 6843 from Prague at the gate
19:30FR 5209 to Valletta leaves the gate
23 h apart on the timetable, overnight
FR 5209 leaves 23 h after FR 6843 arrives on the timetable: more than half a day, so not a connection we count.