Finding images of the thermal diagnostic screen in different states helps clarify things a bit:
So the glycerin based battery coolant is shared by the charger, rotor, dc-dc converter, and inverter, but depending on how the valves are opened determines which systems receive passive cooling vs active cooling.
The radiator in the center is for passive cooling and only passes glycerin based coolant through it.
The AC condensers on the sides are where compressed warm refrigerant passes through and is where the active cooling system expels hot air from running over the condensers.
Within the target range of passive cooling, the battery coolant will pass only through the radiator. When the active cooling target is reached, the coolant for the battery will be isolated from the drive/inverter/charger/etc systems and will pass through the chiller.
The active target cooling temperature changes based on whether your super charging or not, whether you have max battery turned on, and probably a dozen other factors.
So the short of it is, the center radiator is not part of the active cooling system for the battery.