Well yeah if you're not using LAN you're using WAN which means internet. But the option is there to use either one if you want, or even just put a physical SD

Well yeah if you're not using LAN you're using WAN which means internet. But the option is there to use either one if you want, or even just put a physical SD card into the printer directly if you want, no network needed at all then, LAN or WAN.