So yes, Putin probably is considering this scenario at least in his wet dreams...
And it seems like largest country in Europe (by area), with 200 thousand strong army, tons od most sophisticated NATO weapons and 8 years of combat experience have collpased like a house of cards within 24 hours. Do you think Polish or German army will do any better? Or does Russia have better opinion of these armies? So, yes this is possible now... Thereotically...
And history knows larger miscalculations...