Ok, so the FL are saying to Pinnacle (perhaps): "Ok, you've got a good case BUT if we give you the right to appeal it will take longer than between now and the start of the season to resolve due to length of the appeal process and that's why we can't agree to an appeal"
So, in other words, the FL aren't (possibly) dismissing the right to appeal in principle, rather they are saying there isn't enough time to go through the appeal process any more....
I can sort of see where they are coming from if that's the case