Again, no coach is going to explicitly say to commit a penalty except under special circumstances like the end of the Super Bowl.But it sounds like you're saying coaching is a factor in NOT committing the penalty, vs actually committing it, i.e. they're coaching them to NOT commit penalties. Which was my whole premise. They're coaching them to get a half second earlier without actually committing the penalty.
My view is that, in certain situations, you'll never know if its coaching vs execution. Ravens Oline coach can be teaching Stanley to use identical techniques that Taylor is. Maybe one is executing on it and one isn't. If that's the case, then its not a coaching failure. It's only a coaching failure if they're actually teaching them incorrectly.
However, the coaches are absolutely going to coach players in a way that toes the line between is it a penalty or not and cannot be shocked when it gets flagged.