FR 6843 then FR 6596 at Manchester
Prague → Manchester → Barcelona
Timetable, Manchester time
13:10FR 6843 from Prague at the gate
09:50FR 6596 to Barcelona leaves the gate
20 h 40 apart on the timetable, overnight
FR 6596 leaves 20 h 40 after FR 6843 arrives on the timetable: more than half a day, so not a connection we count.