RO 301 then DE 1668 at Frankfurt
Bucharest → Frankfurt am Main → Heraklion
Timetable, Frankfurt am Main time
10:15RO 301 from Bucharest at the gate
09:40DE 1668 to Heraklion leaves the gate
23 h 25 apart on the timetable, overnight
DE 1668 leaves 23 h 25 after RO 301 arrives on the timetable: more than half a day, so not a connection we count.