FR 7621 then FR 406 at Copenhagen
Kaunas → Copenhagen → Rome
Timetable, Copenhagen time
14:35FR 7621 from Kaunas at the gate
09:25FR 406 to Rome leaves the gate
18 h 50 apart on the timetable, overnight
FR 406 leaves 18 h 50 after FR 7621 arrives on the timetable: more than half a day, so not a connection we count.