FR 9674 then FR 8837 at Fiumicino
Madrid → Rome → Zagreb
Timetable, Rome time
23:15FR 9674 from Madrid at the gate
20:30FR 8837 to Zagreb leaves the gate
21 h 15 apart on the timetable, overnight
FR 8837 leaves 21 h 15 after FR 9674 arrives on the timetable: more than half a day, so not a connection we count.