A3 821 then GQ 830 at Athens
Berlin → Athens → Milan
Timetable, Athens time
15:05A3 821 from Berlin at the gate
14:15GQ 830 to Milan leaves the gate
23 h 10 apart on the timetable, overnight
GQ 830 leaves 23 h 10 after A3 821 arrives on the timetable: more than half a day, so not a connection we count.