Well yeah but how does that explain Brauner and Cornell being in the wrong time period? Not to mention the latter is evil and probably gets killed off. And how can Rinaldo have built the combat cross when he was only an infant? Having a Belmont before Leon fighting the friggin devil is also kind off... weird.
Eh, not too hard to explain really. Brauner, Orloxx, and Cornell are all surnames, so they don't have to be the same individuals... just in the same family. Rinaldo is even esier, as he is an alchemist, and potions that increase longevity (and the search for immortality) go hand in hand with the profession.
That being said, I don't think thier is a connection between LoS and established lore, but nothing I've seen so far tells me thier isn't. For all we know, Satan lost his power and began a search for a new lord of darkness, so he started to whisper in the ear of one Mr. Cronqvist, who happened to be good friends (an, unbeknownst to him, a cousin of) the descendant of the man who defeated him.
Once again, I don't think it wil happen, and I'm happy with this being its own thing. But it is possible.