Audible: Whispersync, do we control what books are featured?

[alhawke]

Do we have any control over books being featured as Whispersync compatible on Audible? I noticed two of my books are on Whispersync, one isn't. Apparently there's some great benefits to buying the ebook with this feature for Audible members.

[Bill Hiatt]

If I recall correctly, Amazon or Audible makes the choice and takes its own sweet time about it.

[alhawke]

Finally my last title was added. For info, it took two months. I think the other books only took one month for some reason. 
It's a big feature for Amazon because it drops the price on Audible by a 1/3.

[Bill Hiatt]

My first audiobook (published in 2015) has still not been added. Hmmm...

[alhawke]

That sucks. I haven't done anything with the title. I wish there was some way to nudge them.