I believe the reason that you are not getting any acknowlegement from the UA
brass is that once they acknowledge your submission, if they come close to your design for their final logo, you would be in a position to sue them for infringing on your creative idea. Believe me, that is not far-fetched and a number of companies have had to take a dive by paying out some hard bucks.
Let me give you an example. I was advertising supervisor for the largest natural gas utility in the U.S., when we decided to change the logo which included a gas flame. At first we thought it would be a good idea to have employees and their families participate in this new design, until our law department put a stop to it, because of the reasons stated above.
So, the job of redesigning the flame went to our Ad agency and our PR
agency. Once they came up with about eight different variations, we were able to comment whether the flame was too high, too low, or too wide, etc. We were not allowed to pencil in exactly the fault we found. Once we found it acceptable to the utility's advertising department, then we sent the logo up to the marketing vp, the PR
vp, the president of the company and finally to the chairman.
It's not as easy as one might think it is.
Good design, anyway.