One - they got healthy on the offensive line. They had injuries and illness until about October.
Two - remember Utah really didn't have a normal season in 2020. They had a ton of inexperienced guys on both sides. As they got experience and played together - they started to improve. Most notably Bam at left tackle. He is a big strong dude from England. He had little training and no real experience. Now, I think he may be about a 5th round pick in the draft.