Communication of business facts between employees and in-house counsel are subject to privilege where a significant provision of the communication is to obtain or provide legal advice; underlying data, however, is not protected with the communications.
https://www.cadc.uscourts.gov/internet/opinions.nsf/A81BAEEA3D756416852582B100518ADF/$file/16-5356.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.