Yes there is. I can stablish a clear boundary between me and my environment, that doesn't mean I don't interact with it.

I can clearly see how "I" am different from "you". We have different thoughts, different needs, different objectives and values. That doesn't mean we can't team up. In fact, in order to efficiently team up, I need to understand that you're different from me, and be able to recognize points in common (and differences), to convince you, to treat you well according to what you expect.