Sensations serve as anchors for a sense of subject and object.
For instance, if I bring attention to sensations in my belly, these become an anchor for a sense of object, and sensations in my head area (upper/back of mouth cavity, neck, sensations on the skin of the head) become an anchor for a sense of subject.
If I see this, and bring attention to the sensations serving as anchor for a sense of subject, there is a shift. Now, some of the same sensations still serve as an anchor for a sense of subject, but they are displaced in space to an area just outside of the head.
In this way, the sensations previously serving as an anchor for a sense of subject now become an anchor for a sense of object, and some of them still serve as a (slightly different) anchor for a sense of subject. Now, the subject appears more above or around the head rather than inside of the head, but still anchored in sensations.
And if I see this, there is a chance that there is a release of identification with sensations altogether. I see all sensations as happening within space and awakeness, and none of them are an “I” anymore.
I see the sensations that served as a sense of object, and the ones that served as a sense of subject, and identification is released out of all of it.