Xbox Series X fan on while Xbox series x is in shutdown mode and it updates or loads a game??

I have an Xbox Series X and I noticed when I put it in Shutdown Mode to load games in the background or updates, the fan spins, but slower, then after the download or updates finishes, the fan stops spinning, and to make sure, I put the Xbox series X in Shutdown Mode and at the same time it was loading a game, then I disconnected the Internet, this will stop the download, and after a minute the fan stopped, but the device is still in shutdown mode

Is this normal????

:)