Dee ihe na-esote paragraf a - Duncan gara ọgbakọ LIHG n'oge asọmpi egwuregwu ice hockey nke ụwa n'afọ 1947
, ebe CAHA rịọrọ ka a mata nkọwa ya kachasị ọhụrụ nke onye na-amu amu dị ka onye ọ bụla na-anaghị arụsi ọrụ ike na egwuregwu ọkachamara na njikọta a tụrụ aro nke International Ice Hockey Association na LIHG. Na nzukọ izugbe nke 1947 nke CAHA, Duncan megidere ịbawanye ahịa nke hockey hockey na nkwado nke ndị otu NHL. Mgbe CAHA tinyechara nkwekọrịta maka ndị na-eto eto na ndị okenye, o chere na ọ bụ nnabata nke ọkara ọrụ CAHA.