There are ways of connecting that are opposite in nature... i.e. in the way they are combined, for every element is joined with all the others. Their interconnections are thus literally the opposite of one another. (Simple elements can be combined in opposite ways.)
...yet even so, both connections exist... i.e. both of the contrary and opposite combinations. And this is not problematic, because both exist in order for each to rule over one aspect by itself. The Partzufim also have qualities deriving from one combination of MaH and BaN and qualities from the other.