Silent mouth question

This is too funny.
But for some open discussion on dogs that open on track & some dont & this is just my personal experience & what I have observed over the years. No right or wrong answers, just everybodies observations.
I have had some curs that were run with my hounds & they were dead silent, never opened until the hog was stopped & looking at them.
I have seen curs that were semi open to wide open on a jumped track, that were never run with hounds.
I have had two plotts over the years that were silent. From their genetics, they should have been open but after they were hunted until they were a year & 1/2 to two years old, they both went silent. While both were what I call intelligent dogs, I dont know if it was brains or they just learned if they shut up, they might get up on the hog.
But bringing up the silent dogs, I have seen hogs still run 4 or 5 hour with a silent dog on them.
Some hogs are just going to run & some are not & some will run to their thickest cover to bay up in.
On the dogs side & this I really believe, whether open or silent, some dogs just have the touch. They bay hogs consistently.
I also think where you hunt can also dictate what dogs you use. Hogs that are heavily hunted are just going to run more because you are hunting the survivors & it does not matter whether a dog is open or not.