Because the transaction nature of customers marked as commercial is physical hedging, there is no possibility of price difference, so only N-C accounts will be marked.
Theoretically, the combination of price difference is only a speculation that the price difference between months will be shortened/extended, and it has no clear guiding significance for the long-term trend.
So CFTC's report will take this part out separately-maybe for other reasons, I don't think CFTC will be so polite-so it looks more intuitive.