That's just a very interesting bonfire, in the Freudian sense.
The sam primitive uses the ".." in a consistent way; the subway cat uses ".." or "..." or "...." erratically.
It was the use of the term "bully" that kind of made me think that Frank. As you know that is a favorite term and subject of the sub way cat.
Yes, that is significant, I think, and don't rule out the possibility the sam primitive is the subway cat in disguise.
I'm skeptical, but I've been wrong before.