Board Thread:Naruto Discussions/@comment-26636534-20150912144222/@comment-3568954-20150915045120

just look at the entire battle between Naruto sasuke vs Madara while they all had sage power activated. Madara never once tried to absorb there chakra in this form this could possibly be because six paths power might not be able to be absorbed. as for the truth seeking balls they might not even be made out of chakra but a simple application of the six paths mastery over nature. maybe those who have six paths power can simply create a ball of the actual elements and not chakra based elements for example not once was anyone ever able to absorb Hashirama's wood style, this is simply because hashirama doesn't create wood out of chakra, sure he uses his chakra to create the wood but what happens is his chakra becomes a source of life for the earth and water release and wood is the result ie its really normal non chakra based wood.

also the preta path uses a technique called blocking technique absorbing seal which is A highly advanced sealing technique

this technique requires chakra and as well as concentration as such If the user somehow has their chakra drained or stripped of their abilities to Mould chakra, this technique is rendered unusable.

as for madara not being able to get out of a wood dragon that has nothing to do with the preta path and the wood dragon nullifying each other it had to do with 2 things 1 the dragon absorbed his chakra and therefore he couldn't use preta path and 2 the wood dragon can't be absorbed as its regular wood not chakra based its only manipulated via chakra, example all chakra based techniques dissipate and disappear after the technique ends if a ninja shoots a giant fire ball and catches a forest on fire and then gets stabbed in the back the fire will disappear once the chakra is used up but wood release never disappears it simply turns into innert wood uncontrolled by hashirama, yamato, madara, obito, zetsu's etc etc or who ever cast the wood release