How ‘One Chicago’ Pulled Off an Epic Crossover to Score a Season High of 6.4 Million Viewers (EXCLUSIVE)

The teams behind “One Chicago” had another successful crossover this week — and it wasn’t an easy one to produce. “Chicago Fire,” which kicked off the three-hour event on March 4, drew 6.3 million total viewers on NBC, with “Chicago Med” following with 6.4 million and “Chicago P.D.” closing out with 6.1 million. Each show […]