QR 3671 then QR 3591 at Barcelona
Rome → Barcelona → Catania
Timetable, Barcelona time
01:25QR 3671 from Rome at the gatealso LA 5745, IB 5773, LL 5773, VY 6021
17:20QR 3591 to Catania leaves the gatealso IB 5802, LL 5802, VY 6118
15 h 55 apart on the timetable
QR 3591 leaves 15 h 55 after QR 3671 arrives on the timetable: more than half a day, so not a connection we count.