.... that the quote you provided from Billboard, December 27, 1924, p.20 adds to what is known about Al Gandee? Just the quote is not very enlightening.
And forumites have no obligation to respond to postings. If they find something that interests them or have remarks or further information that adds to the posting, then it is up to them to respond. I don't expect a response to all my postings. I provide whatever information I think is relevant to our study of Bix and his fellow musicians. Forum readers are free to respond or not.