I heard the commentators say they gimbal the sea level engines for the hot stagingAlso notice the firing of Starship's engines at hot staging. I assume the intent was to fire the vacuum, outer engines first, then wait two seconds, then fire the sea level, inner engines. The only off-nominal point was that one of the vacuums was slow to fire. I wonder if they gimballed the sea level engines or if firing the vacuum engines gave enough separation to go with them pointed straight.