The Norse god Hoenir is very confused from what I can tell, but my question is about his mention in the book The Legend of Sigurd and Gudrun by J.R.R. Tolkien. In I.1, he writes
at [Odin's] right Hoenir
roamed beside him.
This is fairly consistent with what I've read about him as a companion of Odin. However, when Christopher Tolkien compiled the book, he also included some of his father's notes, one of which says
At Odin's right hand there walks another figure, a nameless shadow [...] while ever at the right hand walks the shadow that is neither Odin nor Loki but in some aspect Fate, the real story that must be blended of both.
The rest of the writing clearly equates this trio with the trio mentioned in I.1 - Loki is at the left of Odin, and Hoenir/shadow are at the right, and all three are wandering. Odin is also mentioned in both as the leader of the three.
Christopher Tolkien, in some notes, says
In my father's somewhat mysterious interpretation [...] he calls the companion of Odin who walks on his right hand 'a nameless shadow', but this must surely be Hoenir, or at least derived from him [...] to my understanding, [...] there is nothing that casts light on the 'nameless shadow' that walks beside Odin.
Is there anything that explains this mysterious connection made between Hoenir and a 'nameless shadow'/'Fate'?