FR 47 then FR 6921 at Dublin
Brussels Charleroi → Dublin → Barcelona
Timetable, Dublin time
19:35FR 47 from Brussels Charleroi at the gate
12:50FR 6921 to Barcelona leaves the gate
17 h 15 apart on the timetable, overnight
FR 6921 leaves 17 h 15 after FR 47 arrives on the timetable: more than half a day, so not a connection we count.