Yet neither of them unlocked RinneSharingan with only one eye
Bcus they are not controlling the situation here. Even if Double Rinnegan Madara get closer to the moon but if Kaguya not wanted it to happen, it will not happen.
Having the Juubi's chakra is what allowed Madara to unlock RinneSharingan but as I said before, being JuubiJin is not enough, dual Rinnegan is also required which is why JJ Madara and JJ Obito didn't unlock her eye when they possessed only one Rinnegan.
Th reason Madara went through so uch effort to retreive his second eye was because Hagoromo's full eye power is required to unlock a new dojutsu, no different to how Indra's full eye power is required to unlock a higher level dojutsu than the Sharingan.
Sorry, your viewpoint here is wrong. Being a Juubi jin is the only requirement to unlock Rinn Sharingan and double Rinnegan is not needed.
Why JJ Obito and JJ Madara not unlock the third eye when they having a single Rinnegan is bcus its not the time for Kaguya to bring out her Third Eye
Sorry again. You cant used other condition for non-established or non-related ritual.
You assume it related but its not. Only real establishment about a combination of chakra will unlock something is Rinnegan and not Rinn Sharingan as the only thing needed to unlock Rinn Sharingan is CF.
Saying Madara need Double Rinnegan and Juubi chakra is like saying Madara awaken his own third eye but it was not the case here as that third eye owned by Kaguya. Why Kaguya need double Rinnegan for her third eye as that eye already exist inside Madara's body. It was Juubi's eye to begin with.
If you like to related something Ok I bring one. Why Naruto have whisker and how? and why Kushina not having it? No explanation right. And surely it had nothing to do with chakra combination but influence of Kurama and his chakra.
Same as Rinn Sharingan.Iits not about Double Rinnegan but influence of Kaguya's chakra inside Madara's body.
No, Kishi already made it clear dual Rinnegan is required to unlock her eye. Rinnegan isn't required to cast IT but it is required to possess Kaguya's eye power.
Read above post.
The reason BZ betrayed Obito in the first place is because he didn't meet the requirements to unlock the RinneSharingan, if Rinnegan wasn't required he would've let Obito cast IT.
It bcus BZ know Obito have little knowledge about IT and Kaguya. Obito never tells about Kaguya's story but it was Madara. Mean Obito know little about Tablet info and he was not the chosen one. The chosen one here is Madara. It happen before Obito exist in NV.
BZ as Kaguya's Will chose Madara and same can be said to the real Kaguya. Both chose Madara and not Obito. Thus no Rinn Sharingan for Obito but he still getting closer to starting IT.
It's not fanfic, Kishi already made a clear pattern. To unlock a higher level dojutsu a lower level dojutsu is required. In order to unlock MS the Sharingan is required, in order to unlock Rinnegan the Mangekyo of Indra's transmigrant is required.
It's only logic that in order to unlock RinneSharingan the Rinnegan is required. Having the JuubiJin's chakra alone only grants Hagoromo's body, you can't unlock a higher level eye power without his eyes.
The reason Obito intended to use the holy tree to cast IT was because he couldn't unlock Kaguya's eye in the first place, being JuubiJin does not give the user potential to awaken a 3rd eye without the Sage's eye power.
Kishi make it clear for Rinnegan only. Manga fact and DB fact but not for Rinn Sharingan.
You like to make a theory but your comprehension is poor like all your fanfics. If you try that in Naruto forums, you will get schooled hard by community there. And you will not easily pass with all your fanfic there. Its been given that NB community is tolerable and soft.
I clear it for you.
Sharingan to MS is part of it nature and not gained from a set of requirement in the form of chakra combination but it trigger/awaken from emotion. Clearly different from Rinnegan.
If I take it literally, it said a person only need Indra's chakra and Ashura's chakra and not Sharingan and Ashura's chakra given that Indra chakra not stayed inside Madara's eyes but inside his whole body. Even if Madara takes Hashi's eye, he still can unlock Rinnegan.
Manga never said Sharingan+Ashura's chakra but Indra's chakra+Ashura's chakra. Mean Ashura transmigrant also can unlock Rinnegan.
Indra's chakra mean the chakra that Indra have inside his body not just inside his eyes. If you think Indra's chakra only can be found inside Sharingan what actually his other chakra?
Eyes not stored chakra but brain and body. Uchiha's brain have special chakra stated by Tobirama.
But sure Uchiha fan like you will deny the chance of Naruto or other Ashura's transmigrant to unlock Rinnegan.
Like Holy God said Kaguya awaken Rinn Sharingan without having a Rinnegan but if that not strong enough to be the case, I bring you another reason. Juubi wield Rinn Sharingan as her normal eye. If your reason(Double Rinnegan+Juubi chakra) to be valid, Juubi also need to have Rinnegan and not Rinn Sharingan and after combining Juubi chakra with Double Rinnegan, Third eye is awaken. But that's not the case here as Juubi/Kaguya already possessed Rinn Sharingan even before Madara sealed her.
If you uses eye awakening method of Rinnegan, you simply just saying Madara awaken his own Rinn Sharingan and that's not Kaguys's Rinn Sharingan but here you agree with the fact that Rinn Sharingan on Madara's forehead is Kaguya's Rinn Sharingan.
When one entity already have that eye and when you awaken the same eye after you sealed her inside your body, its no longer about Chakra combination but that entity gave you her own eye.
