How Do You Begin a Conversation With a CFO?

How do you open that conversation with a business owner or someonew who has bought from you? What is your messaging when you are initiating that sort of conversation, in terms of learning and growing. How does someone get over that psychological fear? And i think tht there's a term out there called psychological safety itis. Safe to not ask questions of your clients, and even past clients, or past prospects that you didn't othes what?"