Not normal.
But I wonder if they are doing something with their phones. Last week I was trying to contact a chef at DLR, and when Disney Dining put me through to his phone it rang well over 20 times (I'm persistent, LOL), and when I called directly it did the same thing. After a call to another chef, whose number is now something else in the land of Disney, the guy who answered put me through to the main swtichboard and THEY were finally able to put me through without the ringing and ringing.
I just thought it was interesting that I had the never-answering thing last week...