LX 1736 then FR 2437 at Fiumicino
Zurich → Rome → Madrid
Timetable, Rome time
14:00LX 1736 from Zurich at the gate
11:15FR 2437 to Madrid leaves the gate
21 h 15 apart on the timetable, overnight
FR 2437 leaves 21 h 15 after LX 1736 arrives on the timetable: more than half a day, so not a connection we count.