Patterns under Martz were dictated by coverage.
So...in essence, no one really knew the pattern when they left he huddle. Warner and the receivers, who were smart, read the D and ran patterns accordingly. They had to be on the same page.
McVay runs the same formation...like 90% of the time....21.
Teams figure that out over 16, then 19 games.
Case in point...after the bye week...how often did we see Rams players wide open? Remember at the beginning of the year? It was different. But, teams started to understand McVay more. He needs to grow...and at age 33, I have no doubt he will.