That's exactly what I am talking about. The battery drain while in use is not noticeably different than it was with iOS18 / macOS Sonoma. But the standby is significantly worse on both my iPad and MacBook. I am not a software guy, so I may be speaking out of my back orifice, but I don't think these two operating systems share code, they are too different. So the common issue with both of them that seem to have been introduced after update to the new version of OS has got something to do with added or changed features.