Why is Killer Bee still alive? I just want to ask, in Naruto Shipuden when Madara extracted all the Tailed Beast by using the Gedo Statue. It is said that when the tailed beast is removed from a Jinjuriki the Jinjuriki will die.

I just want to ask, why was killer bee not dead and was able to have a dream under the infinite tsukoyumi. How is it possible?
According to this link


  Madara then proceeded to chain them up and prepared to remove
  Yang-Kurama and Gyūki from their jinchūriki. Struggling against its
  confines, Gyūki apologised to B as it was extracted and sealed within
   the statue along with the other tailed beasts, 
  but not before cutting
   off one of its tentacles, letting B survive through the chakra within
   it.


So in short he was having chakra worth of one tentacle which was cut off from Gyūki and just because of this he was able to survive.