Attorneys are bound by a set of ethical rules that limit the communications that can take place with a person who is represented by an attorney. The thought here is that if a person has an attorney, that would be the one in the best position to speak on their behalf. So, in the question you have posed, although you are NOT prohibited from speaking with the other attorney, it just may not be in your best interest to do so. Having an attorney speak on your behalf ensures that you are protected in all aspects of your divorce. The better question would be, why would you want to speak outside of your attorney? You hired him or her for their expertise.