Here's why it's important for you to never discuss your case in a courthouse. So, if you talk in the open hallway, you have no expectation of privacy there. If somebody overhears your conversation, they can take the stand, raise their right hand, swear to tell the truth, and tell the judge everything that you said in the hallway. Bottom line, don't chat in the hallway about your case. Go to one of the dedicated conference rooms with your lawyer where you have an expectation of privacy.