The White House hid Biden’s decline, per WSJ, by giving controlled access, scripting most moments and placing senior advisers in roles that Biden would have otherwise occupied.
Aides kept meetings short and controlled access, top advisers acted as go-betweens and public interactions became more scripted. The administration denied Biden has declined.
https://www.wsj.com/politics/biden-white-house-age-function-diminished-3906a839