Rodgers is the reason that coach has had success.
With the Patriots, they keep winning when Brady is out. 10-6 one season and 3-1 another. When Rodgers goes out, the team is like a 4 win team.
When Martz coached, all kinds of players started to become better players and have better results for the Rams. Multiple QBs from the scrap pile to pro bowl status with Warner, Green, Bulger.
When a trigger event changes results, you can derive the cause and effect.
The current situation with McVay on how Gurley was resurgence, reminds me of what happened with Faulk when he went from a 4.0 yards per carry to a 5.5 yards per carry. Goff going from a bad QB to a very good one reminds me of Warner, Green, Bulger coming out of nowhere to excellent QBs.
Cause and Effect.