Just a suggestion, see if Bill has pictures of the limbs. Go, or call your local USPS, ask for the postmaster, explain the problem and send him pictures. Their computers have more info than what we see online. He can file a report. It helped me.
Something may have happened to the shipping container, or to the address, and it may be sent to the center that handles lost, or undeliverable packages.
It is ALWAYS a good idea to include shipping info INSIDE,(Senders and receivers name, address, contents, phone no.'s), for this very reason.