Legg finally provided answer about the survey. Essentially it says that the results "help us establish a baseline against other leading companies", and that it has distributed to organizations. It WILL NOT be distributed to the employees.
Overall, it gives information about how ATS "culture" is doing, where it is strong and where it needs work. Of course, that will be used to see improvement in the future surveys. But they don't want us to see that, or be able to see for ourselves when our experience is different from what they are reporting. Its a bunch of bull.
If you are in ATS, look for the ATS 4Q24 Town Hall Replay, scroll to the bottom and download the FAQ pdf. Answer is on page 2.