Benzinga's M&A Chatter for Tuesday May 20, 2014 By: Benzinga via Benzinga May 20, 2014 at 17:55 PM EDT The following are the M&A deals, rumors and chatter circulating on Wall Street for Tuesday May 20, 2014: AstraZeneca Shareholder ... Read More >> Related Stocks: AT&T Inc Astrazeneca Plc ADR Cisco Systems DIRECTV Dish Network Corp Fireeye Inc Macy's Pandora Media Inc Pfizer Verizon Communications