Quote Originally Posted by Foxhound View Post
There must be a time span( about some months/years) between chap 602 and 603,604.
because in chap 602 we see "unfinished" spiral Zetsu clone
There definitely is some time span in those chaps. The time it took for Obito to heal is clearly showed here through his hair :

Great chaps lately, all this Kakashi-Obito story is intense.

Obviously, just as there was an explanation to Obito ending up going his path, there's a reason why he saw Kakashi kill Rin. I'm thinking more of a setup by Madara/Zetsu.