FR 6301 then IB 5152 at Barcelona
Sofia → Barcelona → Seville
Timetable, Barcelona time
23:15FR 6301 from Sofia at the gate
14:35IB 5152 to Seville leaves the gate
15 h 20 apart on the timetable, overnight
IB 5152 leaves 15 h 20 after FR 6301 arrives on the timetable: more than half a day, so not a connection we count.