It depends who started first I guess if A (the first mind reader mentioned) was going to read B's (the second mind reader) mind but B was already reading A's mind at the time then A would be reading his own mind which would then also be in B's mind so at one point they won't not be able to share thoughts and instead will just share thoughts but that wasn't really the original question so if A started reading B's mind but B was already reading his mind then he would be reading his own mind and then B would have A's mind mirrored but that still would mean A is reading his own mind and it would stay that way even if they did share thoughts, in that situation, it really depends. Anyways, thats just what I got from it at 1:27 in the morning so sorry if my theory is complete garbage.
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