GQ 821 then A3 868 at Athens
Rome → Athens → Krakow
Timetable, Athens time
16:00GQ 821 from Rome at the gate
10:30A3 868 to Krakow leaves the gate
18 h 30 apart on the timetable, overnight
A3 868 leaves 18 h 30 after GQ 821 arrives on the timetable: more than half a day, so not a connection we count.