FR 6817 then LS 1787 at Manchester
Milan → Manchester → Valletta
Timetable, Manchester time
12:00FR 6817 from Milan at the gate
06:15LS 1787 to Valletta leaves the gate
18 h 15 apart on the timetable, overnight
LS 1787 leaves 18 h 15 after FR 6817 arrives on the timetable: more than half a day, so not a connection we count.