GQ 387 then LO 604 at Athens
Thessaloniki → Athens → Warsaw Chopin
Timetable, Athens time
21:15GQ 387 from Thessaloniki at the gate
20:05LO 604 to Warsaw Chopin leaves the gate
22 h 50 apart on the timetable, overnight
LO 604 leaves 22 h 50 after GQ 387 arrives on the timetable: more than half a day, so not a connection we count.