It loads into the Nintendo DS firmware screen where you can select Slot 1, Slot 2 and such and then loads into the AceKard menu after you choose Slot 1. You can flash your DS with FlashMe to bypass this.
AK2 boots like a normal DS cart, to the standard DS menu (unlike most flash carts that auto boot straight into the flash cart menu).
If you want it to auto load you don't need flashme, you can just set it in the standard DS menu to boot straight to slot 1.
You still have to touch the health and safety screen to get past it, unlike the DSTT which automatically moves on.