There is no "dome" when Nagato uses Shinra Tensei. You're clearly mistaken.
You're arguing a moot point anyway, Nagato used Bansho Ten'in on Naruto and the boulder at the same time. The boulder was going towards Naruto and NOT Nagato, clearly pointing at Nagato being able to choose his trajectory. Kakashi's observation was simply, Kakashi's observation. Nagato did not tell them, nor did anyone knowledgeable on Deva Path's ability.
The other example is the wood and the nail, proving that Nagato made it so the only thing he manipulated was the nail. The wood didn't move.
If he can make it so the wood doesn't get pulled, he can make it so he can only pull Itachi and not his Susano'o. And Gaara pulling Madara out of his Susano'o shows that he can do the same.
And the cherry on the cake is that even if by some ridiculous way that Itachi can somehow take his Susan'o with him, Nagato has Preta Path.
And at the end of the day, Nagato will destroy Itachi ridiculously easily.
There is clearly a dome surrounding Nagato when he deflects attacks that fall from all directions, which means it's counted as a centre. This dome isn't a literal interpretation, but a field of gravity which he alters to his needs either to attract objects, or push them back. Look here:
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- See the circular regions surrounding Nagato? This would also count as centres of ST. It depends upon how wide, or small this area of attraction or repulsion is, depending upon his reaction or how wide he wants it to be, as in case of Almighty Push, which is just an advanced form of ST.
Here, it is quite small -
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.
Look here:
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- Deva is standing slightly to the left, but, Kakashi is pulled at the Asura's sword which lies in a dome like pull/push area that surrounds him when he uses it.
@Midday Dude, your arrow is way off the actual path of the boulder. It's actually titled a bit upward. Come on. As I explained, it depends how large or small this dome of gravitation pull or push is. You cannot simply count Nagato without the area he utilizes as the attractive or repulsive zone or dome. That would make it the centre of this technique as well.
Here he uses ST:
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Nagato and the area of repulsion lie at the centre. Look at the dome-like repulsion area here:
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- it's much larger. See the circular crater under it:
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. This entire area would count as a centre, with Nagato as its epi-centre - the heart of both the techniques.
There is no mistaking here. You people are reading way too much into this.