CA 863 then A3 780 at Athens
Beijing → Athens → Zagreb
Timetable, Athens time
08:15CA 863 from Beijing at the gate
07:35A3 780 to Zagreb leaves the gate
23 h 20 apart on the timetable, overnight
A3 780 leaves 23 h 20 after CA 863 arrives on the timetable: more than half a day, so not a connection we count.