W4 6020 then FR 9446 at Fiumicino
Barcelona → Rome → Valletta
Timetable, Rome time
23:55W4 6020 from Barcelona at the gate
22:55FR 9446 to Valletta leaves the gate
23 h apart on the timetable, overnight
FR 9446 leaves 23 h after W4 6020 arrives on the timetable: more than half a day, so not a connection we count.