Yes, you don’t need to worry about culling, because that’s all done by the engine. Anything that’s not visible with the camera, will be removed, for that frame.
It doesn’t matter if that’s because it’s hidden behind another mesh, or just not on the screen.
Look up the ‘freeze rendering’ console command if you want to see it in action. You can stop the game, and pan the camera around, to what’s being drawn and not 