FR 839 then FR 557 at Manchester
Porto → Manchester → Dublin
Timetable, Manchester time
11:40FR 839 from Porto at the gate
06:05FR 557 to Dublin leaves the gate
18 h 25 apart on the timetable, overnight
FR 557 leaves 18 h 25 after FR 839 arrives on the timetable: more than half a day, so not a connection we count.