I don't believe that AB is compromised AND in recent history, any time Kallis has batted injured his made big scores. And Smith and Petersen are in the middle right now
Its a big score. but its not a scary score. Teams have scored more on the first innings and have lost!
Unlike us, the saffas have taken the option of batting out the overs until they get close to our score. At the run rate they are scoring at, it will be some time on day 4 before the innings is finished, whether or not they trail, matters not, time will be taken out of the game to resolve both first innings
This has the hallmarks of the Ashes test when England was bowled out in a session on the final day and also the Aus India match when India got smashed around the park for 4 sessions and they then took 8 sessions to get slightly behind in terms of the run tally
Usually the action in Adelaide happens at the start of the second innings. Which is a shame because back in the old days it was one of Warne and Mcgrath's favourite torture chambers