I say this kind of thing to my T a lot. He finds me very attuned to him, he even once said that he sometimes feels quite exposed because I am so attuned to him.
He will always reflect on this type of observation from me. If it resonates it he will say he thinks I'm right. If it doesn't ring true he'll often say something like "I wasn't consciously feeling that way, I'm not sure if you were picking up on something I'm not aware of, or if it's something else." and then he'll usually tell me what he's consciously feeling. He is unusually good with this kind of stuff.