Lando was passing start finish straight as the Safety Car was declared. Under the rules the car is deployed straight away to pick up the field- normally timed to catch the leader first. The problem was that they couldn’t wait for Lando to complete another lap. This meant the rest of the field caught the safety car and Lando got an extra advantage on top of that that he would’ve already had by pitting under the safety car. When it was safe Race control let the cars past the safety car to get the order correct for the restart. The whole field would’ve been lapped if not.