Unless your brother-in-law's brother is your husband, there is no direct relationship.
Your aunt's husband is usually considered to be your uncle, but his brother is not related to you, so the brother's daughter is not related to you either.
Your wife's brother is your brother-in-law. Your brother-in-law's wife is not related to you, and the same applies to her sister.
Your husband's brother is your brother-in-law.
Your brother's wife is your sister-in-law, but her sister is not related to you.
Your mother-in-law's brother is your spouse's uncle, but is not related to you.
It depends on which "half" of your half-brother the nephew is related to. Your half-brother shares your father or mother, but not both. If your half-brother's nephew is related to the same parent you are related to, your half-brother's nephew would also be your nephew. If related to the other parent, he would not be related to you.
You are not related to all of your brother-in-law's family, but you are related to some of them. You are related to your brother-in-law. You are related to his wife, your sister. If he and your sister have children, you are related to them - they would be your nieces and nephews. But you are not related to your brother-in-law's siblings, cousins, parents, aunts, uncles, grandparents, etc.
yes that is her brother they are related
They are cousins-in-law and are not related in any way by blood.
You are not related to the wife your mother's sister's husband's brother.
If your brother-in-law is the brother of your spouse, he is not related to your brother. If your brother-in-law is the husband of your sister, then he is also your brother's brother-in-law
You are not related at all.