Are the Space-Time Barrier and Flying Thunder God Technique similar to one another?
a) Jikukan kekkai similar to Flying Thunder God Technique?


Yes, it is derived from "Flying Thunder God Technique", Space–Time Barrier.




  b) Is it used to transport things using Teleportation Technique?


This barrier technique incorporates the use of the "Flying Thunder God" formula as well as a unique set of hand seals to erect a barrier capable of warping away anything which comes in contact with it.