TV’s Frink said:
OT Vader doesn’t ask stupid questions like that.I wonder if it possible to edit the scene so he would just walk into the office and instantly help Palpatine by cutting Windu’s hand (just after he delivers the “you can’t” and “i need him” lines, with “he must stand trial” removed), and not sit afterwards but would rather stand and discuss with Palpatine their next move. So all the “dark side knighting” part of the scene should be removed
I’m pretty sure this is the way it’s cut here.