The good plays don't always show on the stat sheet. But this one directly sets up a score
The Bears run a scissors concept (bottom of the screen) in the redzone vs Cover 4.
In most cover 4 schemes the safety is taught to take the #2 WR after 8 yards which the Rams do here with the slot CB passing off Moore. This vacates the MOF and leaves the boundry CB the difficult task of covering an in breaking route with otuside leverage. His only option was DPI
Caleb Williams steps up in the pocket, throws with anticipation, and likely would have had a TD if not for the pass interference. Caleb saw this the whole way. He didn't have to come off his first read because he knew his first read would be open.