SN 2258 then A3 539 at Brussels
Copenhagen → Brussels → Thessaloniki
Timetable, Brussels time
13:45SN 2258 from Copenhagen at the gate
10:30A3 539 to Thessaloniki leaves the gate
20 h 45 apart on the timetable, overnight
A3 539 leaves 20 h 45 after SN 2258 arrives on the timetable: more than half a day, so not a connection we count.