Do Germans as people occupy more or less the same territory of Europe for longest among other European nations??? Germanic tribes lived in modern Germany in the Roman times and, well, Germans still live there.
I mean, neither French nor Italians have anything to do with Gauls or Romans, let alone Greeks. But with Germans it seems to be somewhat continious.
Modern Italians and Greeks don't look anything like their ancient selves. They have bigger noses, curlier hair, darker skin. They race-mixed with moors and negroes.
I'm not sure which continiousity you're talking about as there were no Germans until 19th century, their united culture is quite new. As for Germanic tribes they were quite diverse and experienced a lot of culture and population shifts between each other (also Prussian culture mostly hadn't come from Germanic people and it still persists in significant part of Germany today)
this argument is gay and invalid as i could find a modern italian who looked like constantine or heliogabal, and that's the tricky part about linking modern italians with the romens
Good thing there's also genetic studies confirming it.
Funnily enough, whereas late imperial period Romans had a LOT of Near East ancestry, it disappears without a trace on transition to Middle Ages. (City dwellers aren't very good at reproduction, and Italian countryside was never population replaced – except for Sicily, that is, which has never been Italic tho)
Italians only become more Greek than ancient Romans.