48 CFR 215.506-70: 215.506-70 Opportunity for follow-up questions.

When providing a required postaward debriefing to successful and unsuccessful offerors, contracting officers shall—

(a) Provide an opportunity to submit additional written questions related to the required debriefing not later than 2 business days after receiving the postaward debriefing;

(b) Respond in writing to timely submitted additional questions within 5 business days after receipt of the questions; and

(c) Not consider the postaward debriefing to be concluded until the later of—

(1) The date that the postaward debriefing is delivered, orally or in writing; or

(2) If additional written questions related to the debriefing are timely received, the date the agency delivers its written response.