I am trying to determine if a recently discovered YDNA match would be considered direct or indirect evidence. I have read the QuickLesson 24 re DNA. However, the four examples do not seem to address my situation which is as follows.
My question would be (generically) Is individual A of hometown USA a grandson of individual B of Faraway, USA?
The tester's (my sibling) YDNA information is a match to an individual who is a great great grandson to individual B, through a known son of individual B.
So is this DNA evidence considered direct or indirect evidence as applied to my question?
Thank you for your insight.