Depends on how define "disclosure." Station cuts away for local "news" from :33-:40. In the break, they run an extended and glowing story about some "breakthrough." At the end of the break, they give a "donor" credit. Is that disclosure?
That's exactly how it's handled for paid spins on music stations. Some commercial news stations do the same thing in the same way, although I haven't heard them on CBS owned stations.