Very odd. I did find the lady in white and she was sitting with the asian guy in black but it looked like they were sitting on the ex-prez side.

Is that Mitch behind Biden in the second photo? He stares at the camera(?) the entire time except at 23:20 when Biden says "...many of my fellow Americans view the future with fear and trepidation" where he looks down and to his left. Something bothered him about Biden's statement.