I have seen people from ATK, Accenture, Deloitte etc join McK / BCG and the opposite (from McK / BCG to firms like ATK, Deloitte). However, I cannot remember seeing anyone move between BCG and McK. Is that true that this movemet does not happen? I have also heard that as each firm has a distinct culture they do not hire from each other. Would love to hear thoughts of the experts.