GQ 871 then EC 3656 at Athens
Munich → Athens → Milan
Timetable, Athens time
16:25GQ 871 from Munich at the gate
11:10EC 3656 to Milan leaves the gate
18 h 45 apart on the timetable, overnight
EC 3656 leaves 18 h 45 after GQ 871 arrives on the timetable: more than half a day, so not a connection we count.