Can you clear my misconception regarding the following situation?

Question

While deriving the meaning of step-cousin logically, one must think about at least one or more of the following possibilities to get the correct answer :

1) It is possible for one's step-parent to have nephews or nieces.

2) It is possible for one's uncle or aunt to have step-children.

3) It is also possible for one to have a step-uncle or step-aunt.

While deriving the meaning of step-cousin logically, if one does not think about any of the above possibilities, will he or she derive a wrong meaning of step-cousin and start thinking that if a person's uncle or aunt has biological children from his or her second marriage, then those children become the step cousins of that person?

Answer 1

Generally, step relationships are only important to the core family unit, i.e. you and your immediate family. But technically speaking, step-cousins share no genetic material with you while full cousins do.