FR 6403 then FR 854 at Manchester
Katowice → Manchester → Porto
Timetable, Manchester time
19:10FR 6403 from Katowice at the gate
12:10FR 854 to Porto leaves the gate
17 h apart on the timetable, overnight
FR 854 leaves 17 h after FR 6403 arrives on the timetable: more than half a day, so not a connection we count.