ASTRAL THINKING abbrev. AT
AT most often seems like telepathy in the present but requires a kind of informed consent with the minds involved if magiqal but there is some leeway with those outside. A level of relational vulnerability must persist to hold and maintain the connection though it has sometimes been possible to make a connection in extreme circumstances.
AT can also be used to mine personal memories or those of others. Though it often requires more intense focus and meditative space. You can metaphysically explore the boundary of your own memories in your mind. Some may even be able to project memories or thinking on other minds for some benefit, use, or even destruction. Some have even successfully switched consciousness, but it is exceedingly difficult to reverse if maintained for too long.
This also explains why most examinations in Thornmouth Guild are not multiple choice and administered in rooms where AT spells are not possible