Me too on 13P. I used to get about 9 hours of SOT on 16.4.1. Not i get about 6. I made the network reset a few times, restart it a few times, and now i will give it a few more days until the index is made. Hoping that this are just the first days until it settles. Hoping. Great job apple. 🥲
Mine had gotten better. I understand a drain for a day or two but this one lasted longer. For me the overnight battery drain was attributed to Siri in the battery settings. that has disappeared the last few nights and battery drain seems normal now.