FR 4596 then AT 1669 at Barcelona
Porto → Barcelona → Tetouan
Timetable, Barcelona time
00:50FR 4596 from Porto at the gate
18:50AT 1669 to Tetouan leaves the gate
18 h apart on the timetable
AT 1669 leaves 18 h after FR 4596 arrives on the timetable: more than half a day, so not a connection we count.