Windows NT 4.0 Sounds in Windows 11

So...as a Christmas present to C:Amie, I wanted to change my Windows 11 logon sounds to be from Windows NT 4.0..
The problem is..I can't get the logon / logoff sounds to work. The other ones do, but not the logon/logoff.
I even did that "ExcludeFromCP" exclude from control panel option for "False" so the logon/logoff sounds appear for customization.
I mean, I know I can rename the sounds, but I was scared of messing up Windows.
Any ideas to not have to do the renaming? It may be a further restriction of Windows 11 vs 10?

You probably have to turn off fast startup: https://www.thewindowsclub.com/change-windows-10-startup-sound

They're playing, but Windows isn't waiting for them to finish like it used to.