I think the way obitos eyes work is...The left eye (whichever obito kept) is a space-time field, meaning its centered around him. A field like that would let you gradually moves things between dimensions (phasing) and another person would have to make contact with the field for the space time...
My two cents on Kenpachis Shiki:
First I think it should be noted that Kenpachi in all things spiritual doesnt know what the f*** hes talking about. He never knows wheres hes going becuase he cant sense spiritual pressure, he cant flash step, and doesnt know any kido.
Kenpachi says: I...