FR 6974 then IB 5152 at Barcelona
Rome → Barcelona → Seville
Timetable, Barcelona time
22:25FR 6974 from Rome at the gate
14:35IB 5152 to Seville leaves the gate
16 h 10 apart on the timetable, overnight
IB 5152 leaves 16 h 10 after FR 6974 arrives on the timetable: more than half a day, so not a connection we count.