air don't care !!
i can't believe the first r.a pic they had all the room they needed why? oval it out .I assume this a high $ home ? how can they stay in business or even sleep at night (hacks). was it inspected ? it looks like a cluster**** to me and i would hate to be called out there. contractors always put in janajunk or similar and have a good duct system this is reverse good system not being used to its full capacity due to poor air flow how could you balance it