FR 5322 then GQ 921 at Madrid
Milan → Madrid → Athens
Timetable, Madrid time
19:45FR 5322 from Milan at the gate
14:20GQ 921 to Athens leaves the gate
18 h 35 apart on the timetable, overnight
GQ 921 leaves 18 h 35 after FR 5322 arrives on the timetable: more than half a day, so not a connection we count.