Yeah, I'm not a professional or anything but In My Opinion its just NOT necessary to blunt short temporary burst of cortisol due to having a GOOD workout. Train as long as you need whether that is 30 minutes or 120 minutes.
What you should spend your money on is optimizing your nutrition around your workouts to keep protein synthesis positive.
This can be done with protein/carbs pre-workout with a bigger emphasis on carbs. My understanding is that insulin spikes save your muscle during exercise + glycogen stores are full providing you with energy to use
Also BCAAs/Leucine which can be used before during or after training (I'm leaning more towards during or after rather than before)
Another big thing is you actually do need to eat some protein atleast every 4 to 5 hours to maximize protein synthesis, but also don't take this to an extreme by eating protein every 1 or 2 hours...that kind of frequency shouldn't have any ADDED benefit towards protein synthesis and may actually be a huge complete waste of protein when it comes to building muscle.