When the Boks won in 2019, the defence was impenetrable. The Boks vary their defensive alignment, but often use the umbrella rush defence when the number 13 shoots out of the backline.
Over time teams have gotten better at breaking the Bok's first line of defence with a skip pass to the wing.
However, the cover defence usually still kills the attacking movement.
Jessie Kriel's defence was phenomenal. I have never been a fan, but Rassie knows that Kriel is a very strong defender at 13 who understands the umbrella rush defence.
It would have been good to have seen Modie get more game time, but perhaps he needs time to learn the position of 13 more- from a defensive perspective within Rassie's system.
If AM was included in the squad to start with, he would have gotten close to Kriel on defence- but offered more on attack