In the scene during which the taint is cleansed, Cadsuane uses a ter’angreal that detects the One Power being channeled and the direction it is coming from. She watches the ter’angreal , and when the enemy channels, she points, and someone attacks. Why doesn’t it point to the huge amounts of the One Power that Rand and Nynaeve are channeling – far more than the Forsaken are being pegged for?
Cadsuane’s ter’angreal was made during the Breaking of the World, at a time when men and women no longer linked, or at least very rarely, since male channelers were going mad at a rate of knots. What the maker was particularly interested in detecting was men channeling, but a man channeling in combination with a woman was, by definition, safe, because no woman was going to link with a man unless she knew absolutely that he was sane and not going to go over the edge into insanity while they were linked. Thus, saidin and saidar being worked in combination could be ignored, and in fact would be a distraction, since this was and is a warning device. Cadsuane’s ter’angreal won’t point to the two halves of the Power being wielded in combination.
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