Who, other than Biden, would a Parkinson’s team go to the White House to see, rather than the affected person going to see them?

ESPECIALLY given what they had to know was suspicious optics of the team going there. What sort of emergency would a random person at the white house have to have for a team to show up there despite the questions it would bring?

There’s only a handful of people who would be at the white house, unfeasible to leave, and has their movements in public tracked at all times. Biden is on that short list.