theora dev - Apr 2011 - RLE for DC/AC-coefficients separately for the blocks or at whole?

It is proper way - to code DC/AC-coefficients for all macro-blocks at whole?
I think that coding for DC/AC-coefficients for blocks separately gives lesser
RLE-compression ratio.
It is right?

For example, at first we code DC-coefficients for all blocks. Compress they by
RLE.
Then, AC(1) coefficients. Compress it by RLE.
And ... AC(63) coefficients for all blocks. Compress by RLE.
It is better for RLE-coding?

> I think that coding for DC/AC-coefficients for blocks separately gives
lesser RLE-compression ratio.
> It is right?
Whether or not it's "right", the format does not give you the
option.
The token system defined in the specification has two ways of exploiting 
runs: runs of zeros _within_ a single block, and runs of EOB tokens 
_across_ multiple blocks. You can't code runs of zeros which span 
blocks, except through EOB tokens.