W4 3553 then IB 648 at Fiumicino
Arad → Rome → Madrid
Timetable, Rome time
14:40W4 3553 from Arad at the gate
12:00IB 648 to Madrid leaves the gate
21 h 20 apart on the timetable, overnight
IB 648 leaves 21 h 20 after W4 3553 arrives on the timetable: more than half a day, so not a connection we count.