A good question about communication that caught ny eye.
In my experience, aint no such thing as a "high level". I think what
people sometimes ask us is "Can you explain this so it makes sense to
me?". Knowing who the "me" is (what they want and why), is the
key.
Communication is always tailored. It exists in a context in which the
recipient is "held in mind". And it's dialogical, so you can jam it
and ask "What would be the important things for you to know?".
It can make you feel put upon, and that it devalues your detailed
knowledge. The words "high level" often get someones goat because of
the lofty assumption. Everyone sees themself as at the "top" of their
information pile. Many years ago I felt that people asking "give me
the view from 30,000ft" were just lazy and entitled. I've come to
regard crafting succinct help as poetry to enjoy.
If you're the person asking that question it helps to introduce
yourself, your role and needs - even if you think the person you are
asking "should know" who you are. So I might say "As chief widget
wrangler, what should I know about..."