A single petition may be filed pursuant to Section 7662 to terminate the parental rights of the alleged father or fathers of two or more biological siblings or to terminate the parental rights of two or more alleged fathers of the same child. A petition filed in accordance with this section may be granted in whole or in part in accordance with the procedures set forth in this chapter. The court shall retain discretion to bifurcate any case in which the petition was filed in accordance with this section, and shall do so whenever it is necessary to protect the interests of a party or a child who is the subject of the proceeding.