A fair and essential question. I am not a physicist, so I could be wrong, but why I expect there would be a coupling is that half-life is dependent on the basic physical forces, essentially the strong, weak, and electromagnetic, the geometric relation of these forces in a given isotope, and their quantum behavior. There is, to my knowledge, no independent half-life variable for the various decays. As the isotope geometry is kind of by definition, that leaves turning the dial on the fundamental forces. The momentum of emission of decay particles is generally what is left over from the mass-energy balance which holds the initial atom together and the products of decay, and that is what changes with accelerated decay.
Now given that I am not a physicist, I should perhaps not indulge in such an argument I have just stated. However, it would seem that the YEC credentialed physicists, who own accelerated decay, do not have the inclination to raise such obvious details on their own. They fixate on their radiohalos as if their own halos depended on them, but just blow by the implications of their own theory as if the details did not matter. It is their YEC theory, it is up to them to work out the expected decay energies from the half-lives involved.