GPU AIO must be exhaust because it produces a lot of heat.The test setup picture does not show this card, but some other air cooled card. I would have been interested in how you installed the 2 AIOs? Mainly was each of them intake or exhaust?
CPU AIO can be either. Intake means CPU gets colder air to help cool it, but drops a bit of heat into the system (though a 9800x3D drops only 50W to 100W). Or it can be exhaust to keep the case even color but the CPU will run a bit hotter.