The illusion is “the passage of linear time”. What we have is occurences in Awareness. It is all experiences. Then the mind puts together a continuity, connecting the dots so to speak. How would a fish that lives in the depths of the ocean experience time, never having seen the light of the Sun? It is regularities in patterns that we experience and we call them passage of time. Of course somebody may object: Isn’t the body changing therefore time is passing? Well, what is happening is changes in the body. And we associate changes with an arrow of time.
We should learn to speak precisely about our experiences, rather than follow customs that we have inherited.