I understand your request but wanted to chime in with the point that Logitech remote controls have MANY device profiles available to be loaded to their no-longer-built remotes. I have tailored mine so I can't be sure which "buttons" are provided by default for the B2 and which I added, if any.
Here's a photo of the soft-button screen portion of my Harmony One when using my Brennan activity (as Logitech calls it). There are numerous hard-buttons and several such as [Stop] with the solid square block are active for the B2.
They might well also have an Outlaw receiver device defined, would definitely not surprise me
--BTW-- How do you like your receiver--coincidentally I am shopping old school 2-channel stuff and had taken note of it recently...
Search for "Logitech" or "Harmony" in this forum to see my prior posts on this which I think included their site for grabbing device definitions.