A more pertinent question might be why you put the word the in front of the words "hal dev". Prom did not say he was the hal dev. Go back and read it if you doubt me.
Okay, "Dan is hal dev". Having "the" in there doesn't change things that much. I put "the" in there because I'm just trying to use proper english. The meaning is the same.
No it's not. Is english your first language?
Now I'm going to turn this around ask YOU why you put in the words "was", "a", "who", "looking", "at", "code", and completely switched the order of "hal" and "dev" to finally get "Dan was a dev who was looking at Hal's code."
You see how ridiculous your argument is?
I already explained this. I said in the light of the other evidence it is the best interpretation. We know that Dan was reviewing many coins.
So it makes sense that it what he did with HAL too.