Tracking down retweets... a fuzzy approach


Hi, i know that tracking retweets in this fashion:

Source -> User1 -> User2

is not possible as Twitter only gives you the original tweet and not any retweet of a retweet. Based on this… do you think it might be possible to track down retweets based on followers of the originator of the tweet? For example, what I want to do is to get a retweet, find all users that have retweeted it and then find how those users are related to the person that had originally tweeted it. If B is not a follower of the originator but have retweeted a tweet… could it be that a person B that he follows is a follower of the originator of the tweet and B retweeted it so A eventually saw it?

Thanks in advance for any feedback.