Dish customer chat finally found the answer that your regional sports network is NOT AVAILABLE with flex at all. PAC, SEC, BTN, and Longhorn network are but no local regional such as FOX SW.
That is not true, did you look at the list of add ons just a few posts above? The local RSN is in the Regional Action Pack. I guess it really can't be said too often, don't contact DISH CSR's other than DIRT. I can tell you exactly why they said that. They saw the package includes your local Regional Sports Networks, Big Ten, and the list of others. In their mind that list IS the regional Sports networks. They have no clue Regional Sports Networks is a channel.