Board Thread:Theories and Speculation/@comment-31338621-20200901181802/@comment-31338621-20200903232105

Ninja Of War wrote: @BrainBrand

I see now. Theoretically possible yeah.

I think Tsukuyomi is too complex to be used simultaneously with combat. And the fact that it has never been shown to as well.

It's true it hasn't been shown to be used simultaneously to be used in combat, but it's also true that Itachi never needed to. Complexity of a genjutsu has never stopped any other sharingan genjutsu from being used simultaneously with other actions, even in the case of the Izanami. Either Itachi was planning to mind control Kabuto into telling him the seals with Tsukuyomi alone or Itachi was going to keep Kabuto in the Tsukuyomi world, while he used another genjutsu to get control him. The later case would prove Tsukuyomi isn't too complex to take other actions with during Tsukuyomi.