W4 6004 then FR 999 at Fiumicino
London Luton → Rome → Valencia
Timetable, Rome time
18:15W4 6004 from London Luton at the gate
14:55FR 999 to Valencia leaves the gate
20 h 40 apart on the timetable, overnight
FR 999 leaves 20 h 40 after W4 6004 arrives on the timetable: more than half a day, so not a connection we count.