Two (2) or more hearings on requests for declaratory rulings, or two (2) or more contested cases against a respondent may be joined together by the presiding officer in the presiding officer's discretion, provided that in hearings conducted pursuant to sections l9a-535 and l9a-535a of the Connecticut General Statutes, as they may be amended from time to time, two (2) or more proceedings may be joined only when the sole issue involved is one of federal or state law or policy.
Conn. Agencies Regs. § 19a-9-22