A3 897 then A3 150 at Athens
Tbilisi → Athens → Kavala
Timetable, Athens time
07:00A3 897 from Tbilisi at the gate
06:55A3 150 to Kavala leaves the gate
23 h 55 apart on the timetable, overnight
A3 150 leaves 23 h 55 after A3 897 arrives on the timetable: more than half a day, so not a connection we count.