Avan
Does the body seem to share two consciousnesses, dragon ball fusion? Or did one of them lose his body shape and the other choose to shelter his friend inside his body? Maybe it can be telepathy too, after all 2 powerful mages of joining with apprentices who share the same origin ... the people of the academy would not be happy, I think. Then one of them may be present only in consciousness there, while his body is back, to avoid further suspicion. But even so, wouldn't the academy have the means to detect this type of presence, to avoid outsiders?