FR 640 then FR 6842 at Manchester
Valencia → Manchester → Prague
Timetable, Manchester time
20:40FR 640 from Valencia at the gate
16:00FR 6842 to Prague leaves the gate
19 h 20 apart on the timetable, overnight
FR 6842 leaves 19 h 20 after FR 640 arrives on the timetable: more than half a day, so not a connection we count.