We were reminded of that in the third and fourth episodes of "The Last Dance" on Sunday evening, as there's still plenty of bad blood between the two sides -- especially between Jordan and Thomas.
Both players still have strong feelings about the Pistons' infamous choice to walk off the floor without shaking hands after the Bulls swept them in the 1991 Eastern Conference Finals.
"During that period of time, that's just not how it was passed," Thomas said in the documentary. "When you lost, you left the floor. That was it."
Jordan wasn't having it then, and he's not having it now.