CZ 759 then FR 6874 at Barcelona
Doha → Barcelona → Dublin
Timetable, Barcelona time
07:05CZ 759 from Doha at the gatealso IB 6201, LA 7405
19:55FR 6874 to Dublin leaves the gate
12 h 50 apart on the timetable
FR 6874 leaves 12 h 50 after CZ 759 arrives on the timetable: more than half a day, so not a connection we count.