https://www.upi.com/Top_News/World-News/2020/09/11/Seoul-US-South-Korea-agree-to-Alliance-Dialogue-on-defense-costs/5611599838886/?ur3=1

The report comes after South Korean Vice Foreign Minister Choi Jong-kun met with U.S. Deputy Secretary of State Stephen Biegun in Washington on Thursday. The "Alliance Dialogue" would make room for "quick and constant consultation" between the two sides, according to Yonhap.(UPI뉴스)


http://www.xinhuanet.com/english/2020-09/12/c_139362671.htm

The two diplomats shared the need to set up a new director general-level dialogue channel, tentatively named the 'Alliance Dialogue,' to regularly review and cooperate on the issues of mutual concern, the foreign ministry said.(신화통신)


한국에서 발표한 것 이외에는 관련 자료 자체가 없었다

다만 미 국무부가 동의하지 않았다는 것(never agreed)도 증빙자료가 없음