Conn. Gen. Stat. § 36a-426

A foreign banking corporation, as defined in subsection (a) of section 36a-425 , which has made or makes any loan or has granted or grants an extension of credit to one or more persons or entities located in Connecticut shall be deemed to be a person having a usual place of business in this state for purposes of subsection (c) of section 33-411 in any action brought by such foreign banking corporation against a debtor or other person or entity arising out of such loan or extension of credit provided at least one party against whom the action is brought is otherwise subject to the jurisdiction of the courts of this state.