I flew LAX - DFW - GRU - MVD

The LAX - GRU legs were on AA and the GRU - MVD on GOL

AA failed to load my luggage at DFW, where it sat for 7 of 10 vacation days. I had to spend $600 in clothing for myself and my 2 kids. I filed a delayed baggage claim with AA and they said:

"For the benefit of our customers, all airlines have agreed that the customer’s final carrier will process baggage claims regardless of where the bag is checked or where the mishandling occurred."

Great! Except I can't find anything online anywhere to file a claim with GOL.

I booked on Biz Plat and that only has lost luggage comp, not delayed. Any information is much appreciated!

EDIT:

I found the answer and it is most infuriating. You need to get an email address from the airport representative to send receipts, and the coverage is per incident, not person or luggage, so I am getting back $150 of the $600 I spent.