Exactly Jose! As you point out, the idea is to make that conversation apparent and explicit, so all can work together, and not limit it to "I want you to do this, how much".

About deadlines, several times I have managed to change what has to be delivered, so it gives a similar value but much faster. And when it has been not possible, prioritization has been key. Yet, after discovering repeated times that once the deadline is reached, and work is delivered, it turned to be far less important than advertised. Even further, even scraping it several times because business did not envision the full repercussions of their idea.

And sadly, I have seen too many managers using deadlines as a poor excuse to make people work.