This stage is called mutual guarantee; it begins from the fact that we simply mechanically want to help each other keep ourselves in the thought that “There is none else besides Him.” At the same time, each of us thinks about the other.
When we all think this way about each other together, we “turn on” the mutual guarantee and it works. In this case, each member of the group remembers more often that the Creator is the source of his or her thoughts and feelings, and they begin to form, to connect with each other into one network.
By constantly helping the friends remember that we are mutually included into each other and connected to the Creator, we try to identify the Creator as our common source. Each of us then becomes connected with others in such a way that the signal from the Creator passes through each one to everyone else. This is another level of connection.
From the Kabbalah Lesson in Russian 2/11/19