FR 1004 then FR 4437 at Fiumicino
Valencia → Rome → Riga
Timetable, Rome time
00:35FR 1004 from Valencia at the gate
16:10FR 4437 to Riga leaves the gate
15 h 35 apart on the timetable
FR 4437 leaves 15 h 35 after FR 1004 arrives on the timetable: more than half a day, so not a connection we count.