FR 1815 then IB 650 at Fiumicino
Porto → Rome → Madrid
Timetable, Rome time
20:15FR 1815 from Porto at the gate
14:45IB 650 to Madrid leaves the gate
18 h 30 apart on the timetable, overnight
IB 650 leaves 18 h 30 after FR 1815 arrives on the timetable: more than half a day, so not a connection we count.