A3 673 then GQ 388 at Athens
Catania → Athens → Thessaloniki
Timetable, Athens time
19:15A3 673 from Catania at the gate
19:00GQ 388 to Thessaloniki leaves the gate
23 h 45 apart on the timetable, overnight
GQ 388 leaves 23 h 45 after A3 673 arrives on the timetable: more than half a day, so not a connection we count.