W4 6021 then IB 2470 at Barcelona
Rome → Barcelona → Leon
Timetable, Barcelona time
14:30W4 6021 from Rome at the gate
09:10IB 2470 to Leon leaves the gatealso LL 3100, VY 5870, QR 8047
18 h 40 apart on the timetable, overnight
IB 2470 leaves 18 h 40 after W4 6021 arrives on the timetable: more than half a day, so not a connection we count.