4Y 1291 then LH 424 at Munich
Kalamata → Munich → Boston
Timetable, Munich time
20:504Y 1291 from Kalamata at the gate
16:05LH 424 to Boston leaves the gate
19 h 15 apart on the timetable, overnight
LH 424 leaves 19 h 15 after 4Y 1291 arrives on the timetable: more than half a day, so not a connection we count.