Can you explain what you mean by the experience of true union? Do you mean perfect communication through words and actions, or some connection on a higher level

Can you explain what you mean by the experience of true union? Do you mean perfect communication through words and actions, or some connection on a higher level, perhaps spiritual or drug-induced? Also, even if, for certain pairs or small groups of people, it is possible to achieve a truly deep level of understanding, in general the principle is still sound and arguably the most important application is to those whose universes are the most foreign to yours.