A3 241 then A3 780 at Athens
Samos → Athens → Zagreb
Timetable, Athens time
08:55A3 241 from Samos at the gate
07:35A3 780 to Zagreb leaves the gate
22 h 40 apart on the timetable, overnight
A3 780 leaves 22 h 40 after A3 241 arrives on the timetable: more than half a day, so not a connection we count.