W4 6207 then FR 2629 at Madrid
Rome → Madrid → London Stansted
Timetable, Madrid time
12:10W4 6207 from Rome at the gate
12:00FR 2629 to London Stansted leaves the gate
23 h 50 apart on the timetable, overnight
FR 2629 leaves 23 h 50 after W4 6207 arrives on the timetable: more than half a day, so not a connection we count.