FR 5817 then FR 8837 at Fiumicino
Bari → Rome → Zagreb
Timetable, Rome time
19:05FR 5817 from Bari at the gate
19:00FR 8837 to Zagreb leaves the gate
23 h 55 apart on the timetable, overnight
FR 8837 leaves 23 h 55 after FR 5817 arrives on the timetable: more than half a day, so not a connection we count.