Then I read this....
https://profootballtalk.nbcsports.com/2019/02/04/jared-goff-ill-try-to-learn-from-this-and-get-better/"Among the things that threw Goff and the rest of the Rams offense was the way the Patriots defense disguised what they were doing by switching from one look to another once head coach Sean McVay’s communication to the quarterback was cut off."
Definitely a chess match. NE would show one defense. McVay would send in a play based on it and then once communication was cut off NE would show a different look.
With 20-20 hindsight, I would say given Goff's inexperience, if I am the Rams, I go no huddle rather than slow huddle. Goff needed McVay's help in reading defenses more than Hightower needed Belichicks help to read the offense. Brady/Brees/Rodgers against an inexperienced defense slow huddle makes more sense.
The Rams defense did the exact same to the Patriots, and Brady had real problems most of the game also picking when they were in zone or man coverage. I guess that's the argument for experience triumphing when the defenses are so dominant, in a low scoring game just one or successful two drives in what is otherwise a slog and struggle can make all the difference. And it did.
Ps. No resemblance of a running threat for the Rams almost all day didn't exactly help Goff's cause either.