"Same Chase stepped toward the cow outlined in smoke on the strange far planet on which his education and career were going to be advanced." He feels a little confused because he doesn't know whats going on.
The "cow" transformed into him and he didn't know what to think. He think he's just talking to himself.
He still talks to "himself" about some stuff. Like how they start to question their sanity because Sam doesn't know whats real and what isn't.
He continues to believe that he is talking to himself but in reality there is no one there that he is talking to, its just the little bugs that formed the cow then it changed into him. He felt a little off then until he realized what happen and how he wasn't going crazy.
Donald Gentry asked Sam what he saw when he had the hallucination but he was a little hesitant to tell him about it. And that made him feel that he was a little pressured and he might get in some sort of trouble and he will get send back to earth.