Not through his chain, he didn't.
You guys condemn Trump for what you claim are illegal dealings -- but you forgive and rationalize any wrongdoing by liberals.
What part of the chain did he overstep?
Here's the transcript of his statement.
The meeting proceeded well until the Ukrainians broached the subject of a meeting
between the two presidents. The Ukrainians saw this meeting as critically
important in order to solidify the support of their most important international
partner. Amb. Sondland started to speak about Ukraine delivering specific
investigations in order to secure the meeting with the President, at which time
Ambassador Bolton cut the meeting short.
Following this meeting, there was a scheduled debriefing during which Amb.
Sondland emphasized the importance that Ukraine deliver the investigations into
the 2016 election, the Bidens, and Burisma. I stated to Amb. Sondland that his
statements were inappropriate, that the request to investigate Biden and his son
had nothing to do with national security, and that such investigations were not
something the NSC was going to get involved in or push. Dr. Hill then entered the
room and asserted to Amb. Sondland that his statements were inappropriate.
Following the debriefing meeting, I reported my concerns to the NSC’s lead
counsel.
First off, it wasn't his place to dictate foreign policy to Ambassador Sondland. Second, he reported his concerns not to his superiors, but to NSC's lawyer.
After the call in question:
I realized that if Ukraine pursued an
investigation into the Bidens and Burisma, it would likely be interpreted as a
partisan play which would undoubtedly result in Ukraine losing the bipartisan
support it has thus far maintained. This would all undermine U.S. national security.
Following the call, I again reported my concerns to NSC’s lead counsel.
So...again, he didn't report to his chain of command. And again, he's making judgement calls beyond his pay grade.