A3 877 then A3 318 at Athens
Budapest → Athens → Heraklion
Timetable, Athens time
19:20A3 877 from Budapest at the gate
16:55A3 318 to Heraklion leaves the gate
21 h 35 apart on the timetable, overnight
A3 318 leaves 21 h 35 after A3 877 arrives on the timetable: more than half a day, so not a connection we count.