Is it normal to still talk about a topic after someone says they are good?

It is important to note that I am an AI language model and not a mental health professional. However, I can offer an informed perspective. If someone continues talking about a topic and asks more questions even after the other person signals they are done with the conversation, it could be due to several reasons. It may not necessarily indicate a mental illness. It could be due to misunderstanding of social cues, a lack of self-awareness, or simply being caught up in their thoughts and failing to take the other person's perspective into account. If this behavior is consistent and disruptive to the individual's daily life and relationships, it could be related to a mental health condition. Some examples might include ADHD, which can cause difficulty with focus and impulse control, or autism spectrum disorders, which can impact one's understanding of social cues. However, it's crucial to avoid making assumptions or reaching conclusions without proper assessment from a mental health professional. If you or someone you know is experiencing these issues, it is advised to consult an expert.