https://www.uscis.gov/policy-manual/volume-7-part-a-chapter-2
Don’t count on it too much.
Officers should first adjudicate the waiver request, as denial of the waiver necessarily renders the applicant ineligible for adjustment of status. Officers should not hold adjustment cases while waiting for either the applicant to submit a waiver application or the Department of State to make a recommendation on a waiver application and instead should deny the adjustment application for ineligibility based on the evidence of record