Let's be clear that unless you have a digestion problem, all protein will be broken down and enter the bloodstream. That's no longer the bowel. It's in the blood. If it's in the blood, it's renal. High amounts of protein are a strain on your kidneys. Water is obviously key here.
Once in plasma, your body is going to use those aminos in all sorts of ways. Bodily processes, repair of tissues, then converted IF YOU ARE IN A CALORIC DEFICIT. Gluconeogenesis is going to happen. You can't escape it bc your body wants fat more than it wants muscle. But once in plasma, aminos are going to do ALL of these things at once until the aminos and glucose get low. Then, ideally, you top it off again with another meal.
Personally, I just throw two scoops of vanilla whey iso into two cups of oats which is 60g protein and 80g carbs and it comes out to ~ 600 calories. And it gets chewed up pretty fast PWO. 30 minutes later I have a full meal around 1500 cals. That's more than a third of my daily 6,000 calories right there.
It's pointless to argue and complicate it. Your body is going to use aminos in plasma how it sees fit. Muscle repair (and hypertrophy) will happen over days/weeks. Be glad it converts. Muscle fiber contraction requires ATP, your liver needs glycogen, etc.
I think sometimes people are so afraid of getting subcutaneous fat that they spend their life in a perpetual caloric deficit. I don't believe in that. If it works for you, great. But just know that in that state, no amount of anabolics is going to put weight on you.