FR 4584 then AT 681 at Barcelona
Porto → Barcelona → Nador
Timetable, Barcelona time
18:55FR 4584 from Porto at the gate
12:10AT 681 to Nador leaves the gate
17 h 15 apart on the timetable, overnight
AT 681 leaves 17 h 15 after FR 4584 arrives on the timetable: more than half a day, so not a connection we count.