I dunno. I don't get the whole training thing in general I guess. I don't "demand" anything of my dogs. I see it as my job to show them how we would like things to roll in our house. I keep showing them until they get it. Calmy, quietly, consistently. Tru has been home a little over a year. She doesn't do the stairs. She doesn't have to, so do I care if she does or doesn't do them? Nope. She is afraid of the dog door flap still. I would prefer she use the door for her own comfort but she doesn't make mistakes in the house so do I care if she uses the door or not? I do not.
Does she know "wait" both verbally and with a hand signal? You bet she does. Will she "leave it" if I ask her to? Every time. Does she come at a dead run when I call her? She does. Her older sister Pearl, a bonafide spook, also does all of those things.
New dog just came home one week ago today. Good racer, just retired at almost five years of age. He marked in the house a few times the first few hours he was home. He was told no and quietly taken outside to finish his business. He "got it" instantly. Hasn't made a mistake in the house since he has been home alone, with the other two dogs, the past three days. When we are home and he needs out, he comes to me and asks to go out.
Both of these dogs came from the same racing owner, different racing kennels. Both of them know their names, both walk perfectly on leash, both are very nice dogs. I give a lot of credit to their racing trainers.
As I said I dunno. We just keep it low key, show the dog quietly kindly and consistently what he needs to know to live peacefully in our home. I believe strongly in lots and lots and lots of exercise for my dogs. Both to keep them fit and to keep their minds engaged. If that is training than yeah, o.k. That's what we do. Dodger is my 6th greyhound over an 11 year period. I let them be dogs and they let me live in my house. Works for us.