Well thanks, but my question is not about time bastard. But about time traveler immunity. Besides, Time bastard does not create duplicate, it erase them.
It seems my question as I formulated it was misleading.
In the example of the forest : Time traveler Immunity does not create a duplicate in 600 AD. It is the original time traveler who is preserved by Time Traveler Immunity. And in the new 1000 AD, the new Crono who always saw a forest, has been created by natural mean : his parent gave him birth.
So in this example no duplicate where created by time mechanics. Then the new Crono disappear through Time Bastard, at the exact same moment the original departed for 600 AD. So when the original Crono in his era, he find no duplicate.
In this case, there is no problem at all.
Now imagine, that after returning in 1000 AD, Crono now leave for 65 000 000 BC. Here, he somehow, kill Lavos before he even crash on earth. I know, it is nearly impossible, but to made myself clear I prefer taking a radical change in the past.
So Lavos did not crash. The reptite do not go extinct. The human or rather the Ape, are the ones who disappear.
Well I know, and I understand perfectly, that Crono will still arrive in 65 000 000 BC due to Time Traveler Immunity.
But the question is, does Time Traveler Immunity preserve the arrival of Crono in 600 AD? Does it create a Crono, identical to the one that originally arrived here?
This Crono, would later be erased by Time Bastard. If he is created that is.
And it is not finished, The same question can be asked for the original return of Crono in 1000AD.
In short, my question is, does Time Traveler Immunity preserve every arrival of a time traveler, or only the last one?
I think, it preserve every one of them. But to do that it will need to create duplicate.
Additionally in Chrono Trigger it would mean, that duplicate of Crono and Co would be created in the bright future of 2300 AD.
Well what do you think?