W4 6136 then FR 3181 at Fiumicino
Prague → Rome → Barcelona
Timetable, Rome time
11:20W4 6136 from Prague at the gate
08:30FR 3181 to Barcelona leaves the gate
21 h 10 apart on the timetable, overnight
FR 3181 leaves 21 h 10 after W4 6136 arrives on the timetable: more than half a day, so not a connection we count.