Psychism and communications with astral lokas, especially lower preta lokas is not spirituality....There is much nonsense in the astrallokas and heavens. People who have passed over know no more than they did when they were in the body. Some may have a limited knowledge of some future but not much.
It is all as much a part of delusion as the physical material but just subtler but still in mind and can be a diversion.
The highest mental level is a Sathya or Brahma loka which leads to moksha at pralaya and maha pralaya. This is the loka of the Bhodisattva and the Avatars and Karana Janmas..
All this is in MIND and therefore delusion..and has to progressed beyond...T