Impeachment Inquiry: Who Is Jennifer Williams?

Williams, a State Department employee, is set to testify in the impeachment inquiry into President Trump. She was involved in the July 25th call between Trump and Zelensky, which she found unusual. Despite her concerns, she did not report them. Williams also attended a meeting in Warsaw with Pence and Zelensky. She noted the call in her nightly notes but was unsure if Pence read the transcript. Williams is among eight witnesses scheduled to testify in the public hearings.

What did Williams note about the July call and the transcript?

How many witnesses are scheduled to testify during the second week of public impeachment hearings?