When we have been gone longer than 4 hours, we get told that we are late. If we are a bit late for dinner, Casie and Cobi both will let us know under no circumstances are we to be late for dinner again.
We solve it, by just walking around the house, picking up, letting them out, and allowing them to calm down a bit before we play with them. It seems to help....somedays, and somedays I take my barking and understand they missed me.