Is it normal for cats to do this specific thing or rare?

Across the street is an older couple. When the man walks down to his mailbox his cat walks with him. Then he retrieves the mail and he and the cat walk back up to the house and they go inside. Have you heard of this behavior in a cat before ? I’ve seen dogs do it but not cats.
Their cat also will sit in the driveway in springtime just looking around then go back indoors.