All QBs get pressured and then defenses appear to be bringing pressure, but dont because they back out and play coverage.
Its the same as defenses playing man to man on one down and then playing zone the next, but disguising it as man to man. Pittsburgh let Jones stand back there like he was back in Alabama. The First half on the Minnesota game saw the Vikings bring little pressure. In the 2nd half, the Vikings kept the heat on Jones and he wilted.
The bottom line is that NFL defense do not respect Mac Jones deep ball. So, they let him have his dinking and dunking between the 20 yard lines which is his comfort one. The Pats offense reaches the Redzone and the NE offense stalls out.