never heard it. >> do you recall having a conversation? >> i don't recall. no, not at all. not even a little bit. >> not even a little bit. not even a little bit does he recall speaking to sondland and knows nothing about it, but he does seem to remember telling sondland no quid pro quo? more out front with more on the historic testimony today. >> the momentous hearing gavelled into session. >> the impeachment inquiry into donald j. trump. >> ambassador bill taylor, trump's top diplomat in ukraine and george kent, a deputy assistant secretary of state laying out what they saw and heard as the trump administration held up military aid while demanding investigations into trump's political enemies. >> the odd push to make president zelensky publicly commit to investigations of burisma and alleged interference in the 2016 election showed how the official foreign policy of the united states was undercut by the irregular efforts led by mr. giuliani. >> reporter: taylor and kent testifying that rudy giuliani, the president's personal lawyer,