Wouldn't that be difficult to say, whether Samanosuke did hide away from everyone else?
As to BW being Canon... I guess I could see it being that way. But where, in all this fire and flames of battle does Megaman, Musashi, Kojiro and Keijiro come in? If Keijiro is in warlords, I don't remember it.
As for Dawn of Dreams being a spinoff... hmm. I could say it was a continuation, based off one fact. If anyone remembers the first time in warlords Samanosuke encounters Tokichiro. I don't know who it was not being able to see the screen but someone clearly said, "This man will later rule under the name of Hiteoshi Toyotomi." So going by that, then, Tokichiro turned out to be Hiteoshi in DOD. But that's just my opinion. And speaking of DOD, could someone describe the intro movies for two of the games for me, that is Oni 3 and DOD as well? I could follow the first two well enough but the third and forth have me confused.