So I emailed Newegg about my RMA taking so long and this is the email I got back:
Dear Customer,
Thank you for contacting Newegg.
I do apologize for any inconvenience this may have caused. I show your package has been received by our RMA department on 08/19. However, it has been sent to our inspection department to check as the power cable is missing. We have sent an email to you about this issue. I show our agent has made a one time exception to process the RMA for you as courtesy. We will process the RMA as soon as possible and update you via email. Thank you in advance for your understanding.
If you have any further questions or concerns, please visit our FAQs page. If you still need assistance, please feel free to email me directly and I will be happy to assist you.
I'm pretty sure I included every component in the box and there wasn't even a power cable there (only a cable to connect 2 graphics cards to each other), but that's besides the point. I never got an e-mail from them telling me that I was missing something.

The rest of the email makes it seem like they're going to ignore that and process the RMA anyway, but I don't even know at this point... So weird.