FR 4584 then LA 5777 at Barcelona
Porto → Barcelona → Manchester
Timetable, Barcelona time
18:35FR 4584 from Porto at the gate
11:15LA 5777 to Manchester leaves the gate
16 h 40 apart on the timetable, overnight
LA 5777 leaves 16 h 40 after FR 4584 arrives on the timetable: more than half a day, so not a connection we count.