OK, I've taken a closer look for the ANS.
The red 'bow' curves trace some bone structure. The POINTED part between the 'dip-ins' would be the ANS. It is sharper in the before. It is somewhat of a prominent ANS but it's RECESSED.
Your upper jaw was advanced forward and lowered. IF the WHOLE PROMINENCE of the ANS were moved along with that, it would have given you a LONGER nose from nasion to sub-nasa, a boat load of columella show and a TETHERED
upper lip labial ledge. Tethering with PROMINENT nasal spine is a deformity that rhino doctors address by REMOVING the prominence of the nasal spine. Based on the fact that you are not left with the deformity of a prominent nasal spine with tethered
upper lip labial ledge which would NEED part of the ANS removed in a RHINO to correct, I would conclude he DID remove part of ANS to prevent you from being left with that type of deformity.
Here is an example of tethered nose (to
lip labial ledge) with prominent nasal spine.
Re: Lines.
Lines are drawn through constant landmarks that don't change to look at areas that do change relative to the landmark lines.