FR 1199 then FR 6926 at Fiumicino
Athens → Rome → Barcelona
Timetable, Rome time
23:59FR 1199 from Athens at the gate
19:20FR 6926 to Barcelona leaves the gate
19 h 21 apart on the timetable, overnight
FR 6926 leaves 19 h 21 after FR 1199 arrives on the timetable: more than half a day, so not a connection we count.