They have no responsibility in good faith negotiations to expose or expound on elements (or your potential "pain points") that are written in a contract. If the contract states that you need to produce code or they will cut off your hand in the middle of a large fairly tepid paragraph. And you ask them what that means, they don't have any need to point out the fact that your hand will be cut off if you do not produce the code. "Our lawyer wrote this, we can't give you legal advice" "I don't know but we would never use it" "That just goes over some terms" or any matter of responses are perfectly acceptable to a question like that. Basically if you are expecting ANY material benefit from asking the other party for advice/their take when considering a contract you are a little more than drooling on your shoes.