Seems to me Milley, under oath, admitted to lying to the Chinese during a public hearing by:
1. Stating he didn’t believe that Trump was planning an attack,
2. Confirmed he told the Chinese he would let them know if one was imminent in order to de-escalate their reported impression that one was planned,
3. Then stated to Congress he would never warn of impending attack if he knew one was planned.
Thereby making any future substantive conversation with the Chinese unbelievable. If that is his job to schmooze the Chinese or Russians for that matter, then he just gave them and the world evidence that he is not to be trusted.
That part raises questions that must be asked if there is any serious intent to investigate this.
"Where did the Chinese get the impression that "Trump" might attack them militarily?"
"Did someone in the U.S. government lead them to believe that and, if so, who?"