Type Amos 7:3, 6 (with a space after the comma) into a Note. The Amos 7:3 gets turned into a link, but the 6 doesn't.
However: select all that text, cut and paste it back in, and now both links get created properly. So it can be done, it just isn't getting done correctly when the text is first typed in.
Interestingly, typing Amos 7:3,6 (without the space after the comma) does work, but I want to be able to type it correctly, with the space, and have the links work.