Same - I also read a study saying 22% muscle synthesis increase with 40 grams of casein before bed and one saying protein before bed improved sleep quality.
Yes - unless you have to wake up to pee I guess. Casein is one of the slowest absorbed proteins so it releases over 6 hours in most cases. I think soy beans is probably the same since its mixed in with fiber. If you compare it to whey isolate thats absorbed after 1. This doesn’t have the same effect.