Unless otherwise provided in a Commission order or pursuant to the terms of an approved tariff, within twenty (20) days of the date upon which a new TF docket has been initiated, Staff shall file, and other Parties may file, appropriate responsive testimony or request suspension of the proposed tariff pursuant to Ark. Code Ann. § 23-4-407. If Staff believes the supporting discussion and analysis is inadequate, Staff may request additional data and justification. If additional data and justification is not furnished within a reasonable time or if Staff needs additional time to review the filing, Staff may ask the Commission to suspend the tariff and require the filing of such additional financial or cost of service data as the Commission may deem to be reasonably necessary.