NPR and your local public radio station are two different things. Everyone acts like they aren't (I never say "I'm putting on WBEZ"; I say "I'm putting on NPR"), but in reality, your local public radio station is a separate entity that buys content from NPR and PRI.

This is usually a distinction without a difference, but when it comes to evaluating the standards and practices of a particular show, it helps to know who actually has oversight.

Its much akin to Syndication on TV but when you see a large Warner Brother's logo in front of a show on the CW, it's easier to distinguish.

Chicago Public Radio and Public Radio International aren't affiliated with NPR. PRI is a competitor.