FR 9601 then FR 348 at Madrid
Rome → Madrid → London Stansted
Timetable, Madrid time
19:10FR 9601 from Rome at the gate
17:10FR 348 to London Stansted leaves the gate
22 h apart on the timetable, overnight
FR 348 leaves 22 h after FR 9601 arrives on the timetable: more than half a day, so not a connection we count.