@mikesull My first B would scream the house down whenever he was in the crate alone. Neighbors told me it sounded like a small child being tortured or something terrible. Finally solved the problem with a second basenji, she kept him company and he was fine with that, no screaming.
Second B was fine so long as another B was in a separate cage close to her.
Third B just sits in the crate alone and stares at the door waiting for you to come back lol, (we set up a camera to monitor him).
One thing that was consistent, all three are far better off staying alone in a room on their own napping while you do stuff BUT only after they are about six years old. Seems 6-8 is the mellowing age.
So I guess all are different.