Was thinking the same thing anon.
POTUS has to have everything perfect down to the tiniest detail.
So, I'm thinking we were meant to see that, or should I say 'witness' that. Even though we may not know what it was really about, yet, I think we will one day.
One day, hopefully in the near future, it will be revealed to us who arrived there at the time of that recording which will also be revealed. And it will be significant.