Jean help in maintaining and altering the time dilation on Earth Prime and Seresian world is a debt that not only Boris had to pay, but also him
However, while Boris would not target Jean, this does not mean the same for other factions in the Senate
Jean might be worried that in his absence, Boris who now have the full power of all the resources of the Republic would use it to start a purge or planted evidence on some of the Senators that did not agree with him.
If Jean shows his face and reassure people and give some warning to Boris, then it is no wonder that Jean would only need a day of rest
But regardless what happens today, Azief could foresee a great deal of internal problem that the Republic would have to face in the future.
Jean had reached Divine Comprehension realm.
This, right now is the highest cultivation realm in the world right now.