what is the proper protocol

I will definitely wait because there is a good chance even after 60 days that the parcel can be delivered to the buyer.. especially if you use united states postal service. I paid a buyer (international) a good sum of money for a parcel that was supposedly lost, later on delivered to him.. and my claim was denied and I lost the money... buyer disappeared with my eletronic plus money..
just a bad experience for me that i want to share to cover yourself..most especially overseas..if Local or usa, will more likely much easier to pay ..

Just beware for international transaction as you have no recourse once money is returned..It is reasonable for buyer and seller to wait.. both parties should understand as risks cannot just be unilateral.. unless you are a big manufacturer who has added cushion for loss.. not small peanuts like me.
i learned the hard way losing over 3k..be careful out there..