General disclosures under Z:
(d) Multiple creditors; multiple consumers. If a transaction involves more than one creditor, only one set of disclosures shall be given and the creditors shall agree among themselves which creditor must comply with the requirements that this regulation imposes on any or all of them. If there is more than one consumer, the disclosures may be made to any consumer who is primarily liable on the obligation. If the transaction is rescindable under Sec. 226.23, however, the disclosures shall be made to each consumer who has the right to rescind.