Ok, I see

I have learned that frames and packets are used interchangeably to refer to the same thing and what I referred to as packets is actually the
sliding window. Although I can't fathom how this can be when packets can be larger than frames and be broken up and sent in 2 or more frames.

Just one of the design deficiencies I guess. Something both of us seem to have been confused about judging from
this post. It would have been a lot simpler if they just called frames frames and sliding windows packets.