Historians used to think of 410 as almost a rowdy tourist visit. I’m not sure that’s true anymore. It was the Vandals in 455 that really ruined things, then Belisarius versus the Ostrogoths and Lombards that did the coup de grace. But if you think about it, in 405 the Danube and Rhine frontiers are leaking but they are still there and 5 years later the Visigoths are in Rome. Very sad.