Can I synchronize WP and BP usernames easily?

I’m still a bit baffled by the WP / BP integration, and the use of two usernames.

I would like our users to only have one username, as asking for two is confusing. Is there a setting I’m missing or a plugin that will synchronize the two, or do I need to have this custom coded?

Here is our registration page, if you click on the Inspector signup button, you’ll see the two username fields.

I’m also using the membership plugin, but don’t think it applies here.