Seattle Husker
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The transcript IIRC was complied from people who listened on the call.The transcript was prepared using voice recognition software, along with note takers and experts listening in, according to senior White House officials. The officials spoke on condition of anonymity because they were not authorized to publicly discuss White House document preparation.The Listeners prepared the transcript themselves.
I'm sure we'll find out if there was any interference. That will most certainly be investigated after Vindman's reported testimony.