It’s hard to follow all the ways in which different corporations are connected to each other, because hiring one executive can link a company to half a dozen others, just like that. Take James Bell for an example. The 38-year Boeing veteran and the company’s former CFO and interim CEO is currently on the board of directors as CDW, JPMorgan Chase, and the Dow Chemical Company, as well as a Trustee of Chicago’s Rush University Medical Center. That means that when Apple added him to its own board of directors this week, it gained connections to four different corporations and a handful of other organizations, all by hiring one man.