This is only an example, as the client could ask many other similar questions.
In fact, the client knows that the legal interim manager has worked in different companies in the past, and wants to benefit from this experience so that an outside opinion, from an expert in a given field, can analyse the effectiveness of an organisation that is sometimes difficult to gauge from the inside.
Legal interim managers may not be fully aware of this, but because they have seen and tested the organisation and management of many legal departments, they possess valuable know-how.
Why not help your clients in this area? This will certainly be highly appreciated, and it in no way undermines your duty of confidentiality, since it is only a matter of suggesting improvements to an organisational system.
So, here is my advice: if asked, or if you feel that this would be appreciated by your client, share your experience to help him/her improve the organization of the legal department!