Have you seen this in your career path: a Board chair that is overwhelmingly difficult. Not just personality difficulties; but instances of excessive micromanaging, changing details of assignments in mid-stream without notifying you, and/or speaking critically of your performance in front of the board or staff, frequently without you present.
I label this type of behavior by the Board Chair as Toxic Board Chair Syndrome. It can cause ongoing difficulties and in many cases severely impact the effectiveness of the organization.