Pleasure, be assured my aggravation was not pointed at you. When I read the Co. manual for the first time, I couldn't make any sense of it. Reviewing it after an explanation was somewhat more successful.
The first part's RVR may only be replaced by an assessment for LVTO 400-150 m. The 90 m segment is a required characteristic for 150-125 m, and no replacing or substitution is allowed. Such has been the case for long decades, irrespective of the fact that many very large airlines have been teaching their pilots the nonsense of counting lights for ages.