After the initial resonance with "All is One" there can be a period for some when they are challenged to include what they previously regarded as unacceptable (things like suffering, Hitler) as also Oneness manifest. That challenge is of course also Oneness manifest. Once all is included the process is complete. From my conversations there is considerable variation in what is gone through between the initial resonance and the consolidation. Of course that is all still Oneness in action so no disconnection happening whatsoever but the feeling of disconnection,which is also Oneness manifest, does not end until that process is complete because the total inclusiveness of Oneness is being challenged by the mind because it knows the character it serves and suspects that total inclusiveness may not be acceptable to it so the non dual solution to feeling disconnected may not be the one that works.