So I did a simple experiment on my PS4. I got my smart phone set it for 15 minutes and fast traveled to the storm cost through the war table with black wall, bull and dorian in that order. I am logged on to the bioware servers and the internet. Once I arrived at the first camp I did not move the characters or the camera. I started the timer and waited. Approximately 10 minutes bull and blackwall fired a banter. Also the music was was a consistent 30 seconds every few minutes. They were talking about getting a drink after blackwalls personal mission was completed. I also completed blackwalls mission days ago as a side note. Funny thing is that if I were to play for hours normally I almost never got a banter. Is this the only real solution. Wait around for nearly 10 minutes at a camp not moving at all?
Ps as I was almost done writing this up which I did another test after getting on my war nug on the same camp, getting off quickly, fast traveled to the blades of hessarian camp(I own it), and waited again for 15 minutes. After not moving for for for 13 minutes the banter triggered again. They followed up by blackwall saying he grew a beard to hide his identity for so long. So the question for Bioware is how do we trigger banter when we are not waiting in camps? What is the perfect scenario to possibly get banter by just playing the game and having fun while not waiting around at a camp for the banter to trigger?