Back in the day when I use to look at balance sheets one thing I remember is if companyA buys companyB, companyA must liquidate cash to make the purchase (if cash is being used). Lots of free cash makes a balance sheet look good and makes that company stock more attactive. Once that free cash number goes down, it throws off the whole balance sheet, not essentially to the negative side but makes it less attractive then it could have been. CompanyA's stock may acutally go down because of this because companyA may also be taking on all of companyB's bills or outstanding warrants, credits, or whatever.
My 2 pips