Originally Posted by Enthalpic

I think it is possible to waste expensive protein by taking too much at once. However, I don't think a huge protein bolus is equivalent to "throwing away food." Once the protein requirements are met and/or the rate of protein uptake is maxed out the excess protein is deaminated or consumed by gut flora. So you still get most of the calories just in the form of metabolic byproducts and bacteria crap (which may or may not be good for you depending on your microbiome).

https://en.wikipedia.org/wiki/Deamination