  Pouliasis et al (2022b) explored star formation rates, black hole accretion
rates, and stellar mass of active galaxies at redshift above 3.5, uncovering a
leveling off of the star formation rate at high stellar mass, which they
consider to be evidence of AGN feedback. Their data shows that as AGN approach
the flattening of the curve in the star formation rate - stellar mass plane,
the accretion rates begin to drop. We describe the nature of the AGN feedback
responsible for this in terms of powerful FRII jets enhancing star formation
rates but eventually also triggering a shift in accretion from near-Eddington
rates to advection dominated. These systems are on the cusp of a dramatic
transition where the active galaxy goes from strong enhancement to large
suppression of star formation in a way that produces the steeper slope for
radio AGN at low redshift compared to radio AGN at higher redshift and to
jetless AGN. We argue, therefore, that the data of Pouliasis et al constitute
the high redshift objects predicted by Singh et al (2021) that connect to the
low redshift behavior of radio AGN shown in Comerford et al (2020).
