Yes, I've had discussions with McKinsey. Simply, in my involvement in the Canadian ecosystem, McKinsey is a vendor that I dealt with in the private sector. I had one conversation when I started and it was part of the Phoenix discussion with McKinsey when they presented their outcomes.
Evidence of meeting #51 for Government Operations and Estimates in the 44th Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was bdc.
A video is available from Parliament.