LH 103 then 4Y 900 at Frankfurt
Munich → Frankfurt am Main → Dubrovnik
Timetable, Frankfurt am Main time
13:00LH 103 from Munich at the gate
09:254Y 900 to Dubrovnik leaves the gate
20 h 25 apart on the timetable, overnight
4Y 900 leaves 20 h 25 after LH 103 arrives on the timetable: more than half a day, so not a connection we count.