Board Thread:Theories and Speculation/@comment-35172651-20180401134411/@comment-9782468-20180511133635

BigVibber wrote: Hinata had NO reason to look. She was trying to figure out tobis jutsu. No reason to look for similarities between Tobi's right eye and Kakashi's left. At that point they didn't even know that his abilities were tied to his eye.

Add to it that both chakras were covered up in some way, and she wouldn't notice a a similarity. Especially since she couldn't figure out why bits of his body were suddenly not existing in their dimension.

Not a plothole