There's no automation involved, it's no different than using a penny/keycap/Popsicle stick/eraser/fat fingers across your keys, or using /click multiactionbuttonblahblahblah within a macro in the game itself. The game can't and won't process any more than one action for each press. It simply processes the first thing it can and disregards the rest of the keys.

If there were delays or loops, then it would be automation and violate the rules.