We've done this off the AVIC leak; i.e, we know it's likely to be some kind of cranked arrow flying wing.We are talking about your detailed extrapolation about the design and configuration and dimensions of H-20 based on unofficial magazine art, which is not reasonable to do.
I don't know how much speculation is being made about B-21, but if there was similar detailed extents of speculation about B-21 based on unofficial art or unofficial statements then I would also view those in a poor light.
For the B-21, similar guesswork has been made since new 'artist's renderings' show a new window arrangement, with Western media arguing for increased stealth.