I intend to write a science fantasy where dream world plays as important role as reality. The dream world stated has quite a distinct feel from the real world, and it is integral to the plot.
The dream—although absurd—feels like reality when we dream about it. Only after we wake up, we register its absurdness and pass it off as a dream.
In my story, dream world is the alternate reality. The characters, when in dream, feel every bit of it and perceive it as reality. However, when I write about it, the readers are bound to notice that it is distinctively different from the real scenario–which will drastically reduce the effectiveness of the narrative. I'd want the readers to get into the dream and feel it just like the characters and jolt out of it when the characters realize it is a dream.
So my question is, how do I blur the line between dream and reality so that it is difficult for the readers to identify if it is a dream or reality?
P.S.: The closest example I can find of such narrative is the movie Inception. It started with a dream sequence and had a scene in between where the dream seemed real. But it is not helping as I'd want the readers to pass absurdity as reality–the way we feel when we dream.