(This is the Warren Buffett Watch newsletter, news and analysis on all things Warren Buffett and Berkshire Hathaway. You can sign up here to receive it every Friday evening in your inbox.) Warren Buffett and Becky Quick covered too many topics in the interviews that aired in a two-hour special on CNBC Tuesday evening for me to write a cogent summary. "Warren Buffett: A Life and Legacy" included discussions about his inability to find a big company to purchase for Berkshire Hathaway as its cash