FR 6921 then IB 5238 at Barcelona
Dublin → Barcelona → Tenerife North
Timetable, Barcelona time
21:40FR 6921 from Dublin at the gate
17:20IB 5238 to Tenerife North leaves the gate
19 h 40 apart on the timetable, overnight
IB 5238 leaves 19 h 40 after FR 6921 arrives on the timetable: more than half a day, so not a connection we count.