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Rosenstein meeting seems to be in multiple media reports:

28 Sept: CBS: Behind the scenes of Jeff Flake’s decision to call for an FBI probe into Kavanaugh allegations
Flake’s decision came after he spoke to senators of both parties and withstood pressure from some Republicans not to take such a step. As he considered his course of action, Flake also had a conversation with Deputy Attorney General Rod Rosenstein, who is in charge of special counsel Robert Mueller’s investigation...

After talking with several senators for awhile, Flake “sort of kicked everyone out,” and he and Coons talked individually in the phone booth for around 15 minutes.
Soon afterward, Flake said he wanted to speak to FBI Director Christopher Wray. He ended up talking with Deputy Attorney General Rod Rosenstein for what Coons estimated was about 10 minutes. Coons had left him alone for the conversation, but when he returned, Flake was no longer by himself...
https://www.cbsnews.com/news/jeff-flake-brett-kavanaugh-fbi-probe-today-elevator-protest-chris-coons-2018-09-28/