The short answer is I don't know.
I assumed both names are honorary.

Here's the long answer.
This was a discussion between @MxxCon and myself after I put a second alt_name for the piece of W103 that's closest to Broadway. @mmxCon said they'd conflict.  I set the Norman Rockwell name as honorary_name as @MxxCon said it was possible and at least wouldn't conflict.  Unfortunately, the honorary_name is not searchable whereas alt_name is.  I went to the other end of the block to verify the Odessa Stewart Street sign and as I do lately, I try to attach a Mapillary image to anything I tag so there is justification.