I'm currently on book 6 of Wheel of Time series, "Lord of Chaos". In it, Elayne has crafted a modified A'dam after realizing that the bracelet doesn't need to be leashed to the necklace. They've come to realize that this is similar to the linking that Aes Sedai do, with one being in control. In the times I've seen it, the linking of Aes Sedai is something that takes at least a minimal effort to be open to it.
So the question is, can the bracelets be modified in such a way that two Aes Sedai wearing them link without having to go through the effort of linking?