I saw a ‘doco’ explanation of what happened with Biden’s salute alongside other Presidents. There was a 4/5 second, maybe longer, delay between each salute. On the other hand they had the video of the actual salute for 45 and you could hear him answer his pledge to the American people, and hear the crowds cheering and watch the salute at the same time. Very moving and the timing was amazing! No sooner had the Marine who held the timer countdown called it and the salute went off. This acknowledgment was for a PRESIDENT - an AMERICAN PRESIDENT elected by WE THE PEOPLE and no one else!!