Is there any indication that the narrator may have dreamt the entire episode in the raven?

There is a slight indication that the narrator dreamt/imagined the entire scenario in "The Raven." This is because after the stanzas you see the words that always imply that there is "nothing more," Meaning that maybe somewhere, deep in his conscious, he knew no one was going to be at the door and that he was going to be greeted only by darkness.