I never made the argument that O-line play does not affect QB play. Football is the ultimate team game. Maybe the Baltimore defense didn't allow those extra points because Flacco got one more first down or completed one more pass. Okay, maybe that analogy was a little bit of a stretch. You don't think there's a ton of value in TC and practice after playing in the NFL?
The way I see it is after 10 games, EJ had time to analyse his mistakes, watch his and others film, work on his mechanics, and try to improve himself. After 10 games with Carr, he had time to watch what his 11th opponent was gonna do. That's it.