W4 6136 then W4 6027 at Fiumicino
Prague → Rome → Valencia
Timetable, Rome time
17:00W4 6136 from Prague at the gate
12:35W4 6027 to Valencia leaves the gate
19 h 35 apart on the timetable, overnight
W4 6027 leaves 19 h 35 after W4 6136 arrives on the timetable: more than half a day, so not a connection we count.