Yep, things overlap, but I'm still getting better arms workout training like this than right after a major bodypart in the same session.
For the shoulders, it's not optimal, but I'm still having a progression. I'm doing push press and press from pin. On the other hand, I have the feeling that having a little of triceps/biceps work almost every day is good thing if my recovery is fine.
I must say that without the Anaconda protocol, I'm pretty sure I would not be able to recover.