Learn English – A word or phrase meaning the opposite action of embedding

How about concise?

marked by brevity of expression or statement : free from all elaboration and superfluous detail <a concise report> <a concise definition>

Or succinct?

marked by compact precise expression without wasted words <a succinct description>

(Or, as Wiktionary defines it, "brief and to the point; having characteristics of both brevity and clarity".)

be at cross-purposes

at cross-purposes:

If two or more people are at cross purposes, they do not understand each other because they are talking about different subjects without realizing this: I think we've been talking at cross purposes - I meant next year, not this year.

Catch the wrong pig by the ear

the porcine reference is unlikely to be flattering but might not land you in any trouble if the person is crazy and at cross-purposes the whole time.