Can the Nahuei dream share? If so can they do so with other receptive species?
It’s not exactly dream-sharing like with the Gelflings, but something similar can occur using their feelers. Touching their feelers to the feelers of another Nahuei can project strong feelings and a vivid mental image. With non-Nahuei individuals, the strong feelings can still be projected by touching their feelers to the non-Nahuei’s temples.
12D-3 does this with Murdoc sometimes, as a display of strong affection. Murdoc has a habit of doubting that people care about him because he feels he doesn’t deserve to be cared about. 12D-3 counters this by showing him just how strong his affection is in a way that not even Murdoc’s self-loathing can dispute.
The emotion projection is achieved via chemicals and hormones, which are transferred via contact. The connection remains for the duration of the contact, tending to fade after the contact is broken. But the feelings take a while to wear off.