Board Thread:The Flash discussions/@comment-4036559-20181010183851/@comment-27700324-20181015220719

Actually Steven, Arrow is affected in a bigger way than you know. You see, in Season one, it is 2012. Therefore, Superman is a well known hero at this point in Supergirl. Yet there would probably be no reference to any past history between them or knowledge of Superman from Oliver. It is also a case of what you said about Flash and Supergirl. What is there to stop Superman or Supergirl from flying over to Star City and handle all of Oliver's problems for a season? At least with Flash, there are metas that are sometimes stronger than Supergirl showing up on Flash.

I think that is why they are taking Cisco's powers soon.