FR 1174 then FR 6842 at Manchester
Porto → Manchester → Prague
Timetable, Manchester time
11:30FR 1174 from Porto at the gate
08:25FR 6842 to Prague leaves the gate
20 h 55 apart on the timetable, overnight
FR 6842 leaves 20 h 55 after FR 1174 arrives on the timetable: more than half a day, so not a connection we count.