FR 6570 then FR 4437 at Fiumicino
Copenhagen → Rome → Riga
Timetable, Rome time
11:30FR 6570 from Copenhagen at the gate
06:00FR 4437 to Riga leaves the gate
18 h 30 apart on the timetable, overnight
FR 4437 leaves 18 h 30 after FR 6570 arrives on the timetable: more than half a day, so not a connection we count.