W4 6066 then FR 6974 at Fiumicino
Prague → Rome → Barcelona
Timetable, Rome time
16:55W4 6066 from Prague at the gate
08:35FR 6974 to Barcelona leaves the gate
15 h 40 apart on the timetable, overnight
FR 6974 leaves 15 h 40 after W4 6066 arrives on the timetable: more than half a day, so not a connection we count.