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Both explain the mechanics of reaper death seal.
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Also are you drawing assumptions because naruto and orochimaru had little to no interaction. And that explains why edo tensei cannot use Reaper Death Seal. Also Orochimaru is not touching Obito.
And madara was an edo most of the time so how can his "soul" be extracted assuming he gets touched. And I think you're giving naruto a little top much credit. Madara as an edo was able to handle naruto woth little difficulty with pure skill. Not to talk of Orochimaru, also he's an edo. When he's alive orochimaru was busy handlibg the senju statue before madara got his limbo, after limbo it's ompossible, heck it was hard enough to touch him at all because of limbo and kaguya was just not wanting to get touched. So no, edo s cannot use edo tensei and orochimaru is npt tpuching any if the above. Also naruto nor sasuke have the strebgth to pull kaguya's soul ecen in the RDS demon shinigami link hiruzen almost didn't seal orochimaru because he was old and uf you watch the episode again he was slipping. Also minato said before his death naruto can't use the RDS since he's a jinchuriki.