A3 155 then GQ 784 at Athens
Kavala → Athens → Tbilisi
Timetable, Athens time
22:00A3 155 from Kavala at the gate
21:00GQ 784 to Tbilisi leaves the gate
23 h apart on the timetable, overnight
GQ 784 leaves 23 h after A3 155 arrives on the timetable: more than half a day, so not a connection we count.