Not exactly like that one, since communicating across it wasn't any trouble. Did you try to get in touch with anyone while they were in their conversation space, or while you were there yourself? It's more like that.

Or... I don't know if you heard about Minako-san accidentally tying herself to a separate Liminal Space in Newport, but she wasn't on the network during that time either. I think she probably hooked herself up to a separate network too, but there was no one else on it.