I understand how the ability works. My point is even small how is it able to pierce through his body when SM Naruto Pain arc shattered deva Path’s rods with his palm when he tried to stab him and that was just TSM. Vote 2 Sasuke aimed a Chidori at his face and it did nothing but send him flying as if he punched him. I would understand if it was that Jigen teleported the rods in him somehow but that wasn’t the case.
When Naruto shattered Pain's Rods he did it through the use Frog Fu from what I can remember. Physical power enhanced by Natural Energies. That being said, it doesn't even make for a reasonable thing to talk about in this specific scenario as no one is debating whenever or not Naruto can destroy the rods as we've already seen him do so against Jigen. He simply cannot avoid them because he cannot see them and was only able to avoid them after learning of the shrinking ability, opting to dodge based on the way Jigen moves his hands rather than the attack itself.
Edit: Almost forgot. When Sasuke attacked Naruto during their final battle, he didn't aim to pierce him, he aimed to punch him with the Chidori or Naruto half-way avoided the attack. Exactly what lead to the Chidori hitting side-ways as opposed to straight on isn't known. Black Rods also holds power to counter Truth-Seeker Orbs, thus it stands to reason that they hold power to pierce things that not even a Chidori can pierce.
I disagree with the thought that Sasuke is under the impression that S/t would be ineffective against Jigen since he also possess such ability. Reason why is Sasuke’s S/T is used and works differently so I don’t think the Kamui comparison is valid.
I would understand this, had it not been for a few reasons. We know that Kamui was able to link up and work in tandem with Kaguya's own Yomotsu Hirasaka technique. Thus we have proof that even completely different Time-Space/Dimensional techniques can affect each other. We also know from Obito use of it that Kamui can be used to cancel Kamui. Furthermore we can judge Jigen's technique by how it looks as we know nothing else off it's characteristics. Based on how it looks it appears to be an almost identical technique to that of Sasuke in terms of appearance.
However as shown with Obito and Yomotsu Hirasaka, even if they are different then it is entirely possible that they can affect each other and logically they should as they exist within the same Time-Space if used on top of each other. You can argue that Sasuke should at least try to use it, but for all we know he concluded that they can affect each other based on logic and the chakra pattern of the techniques that he can see with his Rinnegan.
I agree with most of your second reply but question since Lava release is a KKG would it be absorbed?
If I recall correctly then Madara used Preta Path to absorb Mei's Lava Release when they fought him. Karma seems to work exactly like Preta Path in the sense that it requires close proximity to the target you want to absorb and that it can absorb any technique based in chakra. Preta Path was also able to absorb chakra directly from someone's body as seen with Pain and Sasuke's use of it. Hence it doesn't absorb Ninjutsu, but chakra and there is nothing to indicate that Karma can only absorb specific low level techniques.
And also what gives you the impression that absorbing a planet size RS is possible? The biggest attack that’s been shown absorbed is Naruto’s Oodama Rasengan and Momoshiki absorbing Killer Bee’s standard Bijuudama and Momoshiki is the only user with the feat of absorb something of that level so it’s pretty clear his absorption is absorption power is above the rest so far.
There exists no hard proof that absorption techniques have a limit, but likewise there is no proof that it has one either. What we do know is that said chakra has to be stored somewhere and if the target is unable to control that chakra, it will go out of control. This was the case when Black Zetsu forced Madara to absorbed more chakra than he could contain, making him blow up like a balloon and lose control over it, allowing Kaguya to take over the body. This was also shown when Pain absorbed chakra he couldn't control, resulting in a Path turning into a stone toad. We also see this rule applied to Delta's ability. That being said though... For this argument to work as a solution to Jigen, it would require Jigen to be unable to control same amount of chakra as Naruto has, which I find unlikely.
2) Uchiha were stated to have enormous amounts of chakra. Part One Sasuke was able to use Chidori twice on top of the Fire Ball technique, plus chakra enhanced speed and strength before running out. Gai said Chidori uses a massive amount of chakra.
3) Sasuke has godly amounts given he recieved half the Sage's chakra
These are irrelevant to the conversation at hand. We are not discussing whenever or not Sasuke has a crazy amount of chakra compared to the average person. We are discussing whenever or not he has anywhere near the chakra reserves of Naruto and Jigen. We know he has less than Naruto and we don't know how much Jigen has.
4) Path abilities obviously aren't taxing for him given Nagato could use them all simultaneously.
Nagato was also an Uzumaki and to this date every single Uzumaki we've seen have had abnormally large chakra reserves and life forces. He is hardly a good candidate to make a point like this. Not to mention that we know the more you train an ability the less chakra you can use on said ability as you learn to refine it further, as laid out by Ebisu in Part 1. Nagato had decades to train, he was likely extremely good at refining his chakra, as is likely Sasuke, yet their starting points were likely different.
5) Naruto lasted as long as him because he received all the nature energy aboveground.
I've seen people use this point more than once and it always confuses me how no one seems to understand how Natural Energies work. They aren't a power on their own unless specifically used as a replacement of your own chakra pool. Part of the training to master this power is to learn how to balance the two out. To be specific, this is the quote from the manga regarding how to use Sage Techniques and Natural Energy:
Sage Jutsu involves takin' that internally generated chakra... n' addin' to it nature energy from the outside... resultin' in an even more powerful chakra.
Gathering Natural Energy doesn't give you more chakra, it gives you stronger chakra. In other words you enhance the chakra you already have. If you have zero chakra left and take in Natural Energy, you will still have zero chakra. This in turn allows the user to create more powerful techniques with the amounts of chakra.
