In short: as has been officially confirmed for about 22 hours at least, the events are not related.
And how could they have been, considering that with the orbital speed of 2012 DA 14, the asteroids would have been at least half a million kilometres apart?

https://twitter.com/esascience/statuses/302340615486722048
http://ria.ru/science/20130215/923059266.html
http://www.slate.com/blogs/bad_astronomy/2013/02/15/breaking_huge_meteor_explodes_over_russia.html
http://www.nasa.gov/mission_pages/asteroids/news/asteroid20130215.html
http://kaira.sgo.fi/2013/02/are-2012-da14-and-chelyabinsk-meteor.html
http://sattrackcam.blogspot.nl/2013/02/hughe-fireball-over-russia-this-morning.html