Perhaps the next time Mr. Feltenstein appears on a podcast, someone should ask him about situation with The Unknown so we can get to the bottom of this.
Some more information on the restoration from CineSavant, with a link to a podcast on the matter:
https://cinesavant.com/cinesavant-column-475/
A separate link to the podcast itself:
https://nitrateville.com/viewtopic.php?f=29&t=33640