FR 9986 then FR 1956 at Dublin
Porto → Dublin → Manchester
Timetable, Dublin time
10:15FR 9986 from Porto at the gate
07:25FR 1956 to Manchester leaves the gate
21 h 10 apart on the timetable, overnight
FR 1956 leaves 21 h 10 after FR 9986 arrives on the timetable: more than half a day, so not a connection we count.