LH 3423 then DE 1668 at Frankfurt
ZMU → Frankfurt am Main → Heraklion
Timetable, Frankfurt am Main time
13:38LH 3423 from ZMU at the gate
09:40DE 1668 to Heraklion leaves the gate
20 h 02 apart on the timetable, overnight
DE 1668 leaves 20 h 02 after LH 3423 arrives on the timetable: more than half a day, so not a connection we count.