OP here. I got a call from WN today telling me Fedex would be delivering my bags to my house in Denver. I even just received a Fedex email with tracking numbers showing delivery 1/4 (11 days after I checked them in at DEN). That's two of three bags if I actually get them back. We'll see if that actually works out.

Still missing the car seat that they checked then wouldn't give back to me for our drive home.