Not to flame the OP but under current circumstances I don't know why anybody would ever fly D3 "buddy pass" anymore. The cost for roundtrip flights from Canada to the States with one connection is pretty expensive. As a D3 you are bottom of the barrel on priority and stand a very good chance of not making flights and all the associated costs with that. I really don't get the appeal given that Y class fares are quite reasonable with some planning. And then you have the example of the OP where your bags go astray.