Here’s an excerpt from the article and link to what has been reported.
When asked about a heated phone conversation House Minority Leader Kevin McCarthy reportedly had with Trump, or another phone conversation with Republican Sen. Mike Lee of Utah that's been previously reported, one source familiar with the investigation said: "There are a lot of things like that, that I'll say we're having to learn from them about them from a lot of different sources to piece all of the data together."
https://www.cnn.com/2021/02/12/politics/trump-mccarthy-shouting-match-details/index.html
When asked about a heated phone conversation House Minority Leader Kevin McCarthy reportedly had with Trump, or another phone conversation with Republican Sen. Mike Lee of Utah that's been previously reported, one source familiar with the investigation said: "There are a lot of things like that, that I'll say we're having to learn from them about them from a lot of different sources to piece all of the data together."
https://www.cnn.com/2021/02/12/politics/trump-mccarthy-shouting-match-details/index.html