Ring-bearers - who can notice what about whom and when?
So, I want to get something straight with respect to the bearers of the 20 rings of power (3 Eldar, 7 Dwarves, 9 Men, 1 Boss).
Before asking my question(s), here is some
Motivation:
* Sometimes when <PERSON> puts the ring on, he is noticed by <PERSON>, sometimes he isn't.
* Sometimes when <PERSON> puts the ring on, he is aware, to some extent, of the presence of 'The Eye', even before it has properly 'looked' at him (as is suggested by his exchange with <PERSON>).
* When <PERSON> was in Dol Guldur, at least in the movies, <PERSON> did not take the ring Narya away from him. Unless <PERSON> stashed the ring somewhere (not impossible I suppose), it means <PERSON> couldn't notice it.*
* <PERSON>, despite being a ring-bearer, seems to have been clueless about who has what ring, if any, before being told outright. Also, he does not seem to notice that the Nazgul (who attack him) are missing their rings (or are wearing their rings, depending on which notion you subscribe to).
* In the Encyclopedia of Arda article about the Flame of Anor it says that <PERSON> is not likely to have revealed to the <PERSON> the fact that he had gotten his hands on a ring of power.
* All 19 rings were forged under the influence of <PERSON>'s deceit, and he had reason to expect he would be able to influence all of their bearers. So much so that "when <PERSON> put the Ruling Ring on his finger, the Elves were immediately aware of him and took off their Rings". 88
On the other hand, some claim that these rings are invisible. Well, what's the use of that if you have to keep them in your pocket anyway to avoid being noticed?
So, I want to get this straight:
Actual Question(s):
Suppose being X is currently {wielding, bearing on its body, in possession but not bearing} ring of power RX, and being Y is currently {wielding, bearing on its body, in possession but not bearing} ring of power RY...
* Is X 'aware' of the existence of Y?
* How much information can X obtain about Y in this situation? (e.g. name, thoughts, location, mental/physical health status)
* Can X communicate proper specific information to Y?
* Can X communicate unspecific sensations/emotions to Y?
* Does X know that the state of use of ring RY (That is, know whether it is being worn, borne or under someone's control)?
So, I've essentially asked 4 * 3 * 3 * 5 = 180 questions at once. Is there, like, some badge for that?
Anyway, references to partial answers are quite welcome of course; but the best would be some general principle from which one can derive all the answers.
This is a generelization of:
https://scifi.stackexchange.com/q/<PHONE_NUMBER>
https://scifi.stackexchange.com/q/<PHONE_NUMBER>
* In the books it seems he snuck into there, not sure how that's supposed to have happened. 154