Corporate Governance question

Can some explain to me what “Inter-locking Directorship” means? P 247 Question 9 of corporate finance. thanks

Here’s a quick example: Director 1 is CEO for Company A and is on the board of Company B. Director 2 is CEO for Company B and is on the board of Company A. A conflict of interest would be apparent in this situation.

ahh ok good. thanks. One more reading on Corp Fin!