EW 522 then FR 4587 at Barcelona
Cologne → Barcelona → Porto
Timetable, Barcelona time
19:45EW 522 from Cologne at the gate
15:35FR 4587 to Porto leaves the gate
19 h 50 apart on the timetable, overnight
FR 4587 leaves 19 h 50 after EW 522 arrives on the timetable: more than half a day, so not a connection we count.