Hi Benjamin Hi and welcome to connect, I myself had one of the general conditions that fall under Cardiomyopathy, but I had to look up that other condition. The 2 may be related only that amyloidosis could affect any organ but according to Mayo https://www.mayoclinic.org/diseases-conditions/amyloidosis/symptoms-causes/syc-20353178
it may affect the Heart but I don't believe that having one will mean you can say you have Cardiomyopathy also. Probably best to ask a doctor that question. Have you been Diagnosed with Amyloidosis?