the unlikely media report that the meteorite is 'independent' of the asteroid that passed by this day
It came from a different region of space, on an entirely different orbit. 2012 DA14 approached Earth from the south on a northward trajectory, whereas the Chelyabinsk meteorite was on a what looks like much more in-plane, east-west orbit. As unlikely as it sounds, there is no way they could have been the fragments of the same asteroid (unless they broke apart years ago and were consequently separated further by more impacts or the chaotic gravitational influences of other objects in the solar system).
OK. Unlikely doesn't mean not true. But I would expect there to be some debris-type events around the passing of an asteroid, whereas a completely coincidental meteorite (for, say, the entire month over which the asteroid is passing) has a lower probability. It's like helping an old lady up after a fall and picking up her cane when she says, 'oh no, that isn't mine'. (Someone else dropped their cane?)
From your account and others, it seems the trajectories were not similar enough to conclude they arrived together in the same bundle. The second idea is that ...
If it's worth saying, but not worth its own post, even in Discussion, it goes here.