Conn. Gen. Stat. § 46b-115o: Notice and opportunity to be heard; joinder.

(a) Before a child custody determination is made under this chapter, notice and an opportunity to be heard in accordance with the standard established in section 46b-115g shall be given to the parties, any parent whose parental rights have not been previously terminated and any person who has physical custody of the child.

(b) This chapter does not govern the enforceability of a child custody determination made without notice or an opportunity to be heard.

(c) The obligation to join a party and the right to intervene as a party in a child custody proceeding under this chapter are governed by section 46b-57.