@TipsyTentacle I plan to write a whole book on it, but if I can summarize..
The universe is sentient,but this consciousness exists outside of the universe itself; it is literally alien to its contents. Similarly, we are literally alien to the world our bodies exist in--we and all animals like us must get taught how to exist by our predecessors, and our consciousness experiences the signals received from our physical form.
If a consciousness can be powerful enough to transcend the physical, it might need to transcend time to transcend space. Aliens powerful enough to do so can't reveal they're with us at every moment lest be paradox