I just listened to the end of AT40's Top 40 of 2015. After the #1 song, Ryan talked about the future, plugged Idol, then left. He didn't read a staff list or any credits at all. Didn't even invoke the name of Casey Kasem.
All right. Blame it on the out-of-touch mucky-mucks at Premiere. Fair enough. I'm checking the website, and the About section is really about Ryan. Ugh, this is frustrating. It looks like I may just have to Google the answer.
Casey hasn't hosted in 12 years. And the site has a bio of him and Ryan always makes mention of him at appropriate times. I'd say that is pretty good and more than necessary to keep his memory alive on the show