FR 3977 then 3O 374 at Barcelona
Dublin → Barcelona → Casablanca
Timetable, Barcelona time
21:10FR 3977 from Dublin at the gate
17:053O 374 to Casablanca leaves the gate
19 h 55 apart on the timetable, overnight
3O 374 leaves 19 h 55 after FR 3977 arrives on the timetable: more than half a day, so not a connection we count.