It seems that some think that if CAC is limited by its size of workforce and floor area to meet PLA's demand, then it must be SAC to produce large number of J-35A to fulfill that demand. However this is not the only possible conclusion to draw.
I tend to think CAC and SAC as a whole, they together fulfill whatever demand that PLA want. What ratio of J-35 and J-20 is up to PLA's design of their force structure, less a thing based on who is designer and producer. If hypothetically PLA only want heavy fighter or majority of their fighter being heavy, and CAC's current manpower is inadequte, AVIC can alot floors and workforce in SAC to produce J-20, or sent workforces to CAC if factory facility isn't the limit. AVIC's former self did that many times, XAC and CAC were created out of SAC and CAC got the job of making J-7 that was initiated by SAC as a result.
So I won't put much trust in the talking by the Guancha Trios of "CAC up to their extrem limit". They know some bits and pieces from their contacts here and there, but not every dots can be connected correctly. Even they know a guy in the production line of J-20, that guy won't necessarily know what AVIC and PLA have in mind.