The Los Angeles Rams were very aware of just how important All-Pro defensive tackle Aaron Donald was to the defense. It's logical to conclude that the way he played regular-season games with such intensity and passion might supply the evidence to form that conclusion. His passion was not limited to facing other NFL teams. There is little evidence that he could ever turn it off.
It comes as no surprise that a former teammate, undrafted quarterback Luis Perez, has harrowing tales about facing Donald in practice. He originally signed with the team as an undrafted collegiate free agent after the 2018 NFL Draft.