Re: the motorcycle thing. During the mid-seventies, I had a close work association with BD's uncle. One day he was telling me about, just returning from an important family event that Bob had invited him to and was held in LA. I won't disclose any of the details he told me, but he confirmed that BD was not doing well and had been going through a very troubling period in his life, but things were starting to turn around.
I offer no opinion on whether he needs to be gracious or not. 56 plus years and counting, and as always, he'll deal with it HIS way, and I'm good with that.