Chickpeas and allelopathy- a homegrown experiment

I germinated some chickpeas together with various types of beans ( broadbeans, french beans, mungbeans) in a large pot. After about 6 weeks the chickpeas are flourishing and seem to get bigger every day. They are about 20cm tall at this stage. The beans however seem to be struggling.. could this be the effect of secondary metabolites? Some of the beans look like they have been infested with a virus of some sort. Beans I germinated at the same time and planted seperately are about 3 times the size as those growing together with the chickpeas! They look healthy.. I have removed all the struggling bean plants and hope they will survive..