W4 6240 then FR 1814 at Fiumicino
Varna → Rome → Porto
Timetable, Rome time
11:05W4 6240 from Varna at the gate
11:00FR 1814 to Porto leaves the gate
23 h 55 apart on the timetable, overnight
FR 1814 leaves 23 h 55 after W4 6240 arrives on the timetable: more than half a day, so not a connection we count.