"high-level discussion" is correct and usable in written English.
You can use it to refer to a discussion or debate between people with a great deal of knowledge in a particular subject. For example, "The high-level discussion about the future of space exploration lasted for several hours."
Yes, there was "high-level discussion" at the company over stretch, he said -- "a brawl," in fact.
Musk said he and Carter had a "high-level" discussion not about procurement programs but about innovation.
Redacted emails among the documents released by the Danish government reveal high-level discussion about N977GA between Danish police and top civil servants between 25 and 27 June.
But the Congress has offered only a high-level discussion with Inkatha, apparently reluctant to confer upon Chief Buthlezi a status equal to that of Mr. Mandela.
Though the label suggests a high-level discussion of international affairs — even if through the prism of each member's global investments — the discussion, at least on the day I visited, focused mainly on each member's travels since the last meeting.
And no high-level discussion about transport in Britain can ignore the contentious issue of which airport should be expanded to provide greater capacity for London and the south east.
That made it harder to have substantive, high-level discussions within the White House about possible responses.
Gough, elected to the Royal Academy of Arts two years ago, enjoys high-level discussions there about art and architecture.
We've been having high-level discussions with the prime minister, the chancellor and treasury minister David Gauke".
A Draskovic adviser, Predrag Simic, said tonight that Mr. Draskovic was engaged in high-level discussions with foreigners.
Some are high-level discussions about technology trends, while others deal with problems that benefit from online brainstorming sessions.
