How did gold and oil co-move across the 2000s commodity boom versus the 2014–2016 oil slump?

Public history gives us two useful contrasts for the gold and oil relationship. During the mid-2000s commodity boom, both markets rose together for years while real interest rates stayed fairly low and the dollar weakened, which is a pattern that looks similar to the 1970s when the link was strong. In the 2014 to 2016 oil collapse, oil fell sharply while gold was comparatively steady, and the dollar strengthened, so the two did not move in lockstep. I'm not certain how much of the difference came from real rates versus the dollar versus supply shocks, and the sources I'd lean on disagree on the weighting. Reading those episodes side by side suggests the correlation depends heavily on what is driving the move rather than on a fixed relationship. When you look at your own process for judging whether gold and oil are moving for a shared reason, which variables do you check first, and how do you decide when the link has broken down?