I don't know for certain but it wouldn't surprise me if the D coaching is more conservative on purpose. We have seen this in blowouts over the last few years...teams score in the 2nd half.
The refs are amazing. They nailed this game. Clear blown calls when it mattered. Make up calls late. Atlanta given a chance but blows it. Refs don't get remembered because their dirty work was done on the previous drive. Sensational execution.