With experiments like this, the key is they're observing NEUTRONs, which means it HAS to be a nuclear process. When you see triple tracks in CR-39, they're a signature of Neutrons.
You don't have to keep up with the theory because there are DOZENs of theories. Even mine: Vibrating 1 Dimensional Luttinger Liquid Bose-Einstein Condensate Theory [V1DLLBEC] https://www.lenr-forum.com/forum/thread/5859-1-dimensional-lenr-theories/ You can read LENR articles at your leisure at www.lenr-canr.org, click on "introduction".