The comment from
@dbdb11 about RT and BT bickering was in this post he made in July:
CA - CA - Barbara Thomas, 69, from Bullhead City AZ, disappeared in Mojave desert, 12 July 2019 #2
He was replying to a question (-Did they always get along?) and wrote:
"In my experience no one always gets along. They're both very human, had arguments and were able to get through them. My father and his wife refer to their arguments as comical and a notable part of their relationship. ie. It was entertaining watching them stubbornly bicker over something."
This doesn't sound ominous to me. It sounds like what happens in lots of marriages, IMO, with two stubborn people. It's possible the VI's thoughts about the bickering could have changed since he made that post, of course, but it's been a while since we heard from him.