Listening to RBG oral arguments before and after her recent absence. Unable to discern any changes in her voice. Have any AudioFags compared the voice recordings? Here are two recordings where she is asking questions early on in the oral arguments:
https://www.supremecourt.gov/oral_arguments/audio/2018/17-1594
https://www.supremecourt.gov/oral_arguments/audio/2018/17-961
I do not believe that she has returned to the bench…I think I smell a rat, no matter what is being reported to us.