You guys are a little confused on when gluconeogenisis happens... It is a process that takes place when there is not enough glucose/glycogen to supply the muscle with the ATP needed. So protein only gets converted during low carb periods, or during fasting / starvation. Quite often during ketogenic dieting efforts. You aren't going to be in a mixed macro diet plan randomly kicking of gluconeogenisis while blood sugar and glycogen levels are sufficient...
Also not everything is either used or stored. You are crapping out protein, carbs and fats every single day. When it comes to protein, if it isn't used or stored it is processed as waste. In the typical situation excess protein is not going to be stored as carbohydrate, or fat. It will be removed as waste unless deficient enough in some other area that you require it to be converted for use.
There have been some studies showing that there are some performance and growth benefits by going as high as 1.25g/lb, and many saying you don't need more than .8g/lb so I tend to stick in that range. Sometimes for greater satiety I have a lot more protein IE 300g plus, but it is for satiety not to elicit more protein synthesis.
Large protein meals were the norm when we had to forage and hunt. Out body has feedback loops to slow down the digestion process so that everything can get processed. Even a 3lb steak eaten in one sitting is going to get processed correctly. The bolus sphincter from the stomach to the small intestines closes to a much smaller hole when a large meal has been eaten to slow the nutrients entering the intestines down to the point that the intestines can process the meal. A lot of that only so much protein in one meal crap came from the owner of nautilus excercise machines starting to sell protein and telling everyone only so much protein could be used per meal so you needed more frequent and higher amounts of protein. AKA, Hey guys, buy my product...