Answer: It is when they are on the same level, one inside the other. AHP of the upper descends to GE of the lower and enters it. When the lower wants to connect to the upper, it must enter AHP of the upper with his GE.
Once AHP of the upper is in GE of the lower, and another time, GE of the lower is in AHP of the upper; everything depends on who controls the state and who determines it. If I am the upper, I descend to GE of the lower, and so I want to enter it and know what happens to it and feel its deficiencies. So, I descend into it and am in its internality.
If the lower wants to adhere to me with its upper part, its GE, it enters my AHP. Everything depends on the type of work between the upper and the lower that we refer to.
They always adhere to each other by equivalence of form, but this equivalence can stem from the upper with regard to the lower or from the lower with regard to the upper. The upper diminishes itself, wanting to feel exactly what the lower wants, and so it enters the lower. The lower says, “The upper is so big! I want to be like it, and I totally annul myself just to be in it! I am ready to drown inside the upper so that the upper will swallow me!” This means that GE of the lower enters AHP of the upper.
If the lower connects to the upper this way, the upper ascends and takes the lower with it. It is because they become one whole, and the Upper Light that operates on that level operates on both of them.
From the 3rd part of the Daily Kabbalah Lesson 2/18/14, Talmud Eser Sefirot