W4 6017 then IB 5938 at Barcelona
Rome → Barcelona → Marseille
Timetable, Barcelona time
08:45W4 6017 from Rome at the gate
07:50IB 5938 to Marseille leaves the gatealso LL 5938, VY 8132
23 h 05 apart on the timetable, overnight
IB 5938 leaves 23 h 05 after W4 6017 arrives on the timetable: more than half a day, so not a connection we count.