Our physical world is an illusion. The external Kelim of the soul create the sensation of outer world in us, but in the end of the correction (egoism to bestowal) we will perceive that world as internal.
All the souls in general system are interconnected as they derived from Adam ha Rishon. Dissemination is the form of the connection with general system, the general Kli. We have to correct our connections in order to reveal the Creator.