is it possible to blend playables in a animator graph?

timelines are a great way to compose motion
animator graph is a great way to blend animator motion and control state
is it possible to blend playables in animator graph?
the final goal is to control all the states of a game’s UI, for example when the research panel is open every other panel closes and some panels disappear.

I see you never got a response to this and you probably don’t need the answer anymore. However, if anyone else comes here then the answer is yes. Although it is a much more manual process and is difficult to achieve some things. You have to manage all the blend timings between animations. For example, for idle, walk, run. And if you don’t do it right then you get strange results.