I bet some unpackers grab physical memory for their sliding window up front, but the balance between memory per connection and ratio, and the question of whethe

I bet some unpackers grab physical memory for their sliding window up front, but the balance between memory per connection and ratio, and the question of whether any standard here ought to specify a number or we should just let servers and clients do their best to work things out, would still be a thing even if the space taken were also bounded by the download's size or stream's length.