As others have said, if you have an inside sat. rx (like from your stick house) it requires a direct connection - use the external sat connection to run a lead to your dish which is probably on a tripod.
Under our living room tv is another cable plate with two connections. If you don't have a sat. rx, there should be a short coax that loops the sat. connector to the whole house distribution system.
We have two sat. rxs that require three cables between them. We don't use the house cabling at all - I put all the video gear in the basement and switch HDMI outputs as required.