First person spectator camera

I think I have not explained the situation well enough.
It’s a two players showcase :

  1. One player is the host, and will take
    control of the playable character
    pawn (with the oculus rift)
  2. The other player is a spectator, always. He starts as a default spectator pawn, but I want him to be able to see the playable character pawn point of view. To be honest, the point is to record this second view on another computer without impacting the first player (the oculus rift is very needy in ressources).

I don’t know why what seems a really basic feature of every multiplayer game seems so hard to achieve, I guess I’m not familiar enough with the BPs. But to be honest, I litteraly lost half a day toying with BPs with little results.