The phrase "already briefing" is correct and usable in written English.
It can be used when indicating that a briefing has commenced or is in progress before a certain point in time.
Example: "The team is already briefing the new project details to the stakeholders."
Alternatives: "currently briefing" or "in the process of briefing".
She noted that she did away with the gaggle at a time when she was already briefing at noon each day, while Mr. Gibbs's formal briefings often take place later in the afternoon; on Tuesday it started at 2 40 p.m. "With a later briefing," Ms. Perino said, "then a morning gaggle makes absolute sense".
In theory that should be manageable, given Mr Modi's hands-on style (senior bureaucrats are already briefing him).
True to form, the Treasury is already briefing against Mr Turner, claiming that he has exceeded his brief.
Clarke added: "[Cameron] probably has been forced into it because one or two of them [ministers] are obviously already briefing the newspapers and have been for some time.
Since that tweet, we've heard further whispers about a change to Facebook's 24 hour policy retention, and that Facebook is already briefing developers on the upcoming changes.
Baudelaire in this role has made already brief appearances in Calasso's books.
Theresa had already briefed the BBC that he was going to be sacked.
According to Mr. Dorgan, General Johnson testified after the inspector general had already briefed Defense Department officials about the findings.
The government has already briefed union representatives on the terms of the deal and will brief political leaders soon, Mr. Stefanou said.
He had already briefed the laser crew, met with the arena's director of operations, and was going to go check out the hospitality suite.
And the event cast a shadow over Egypt's coming presidential election, shortening an already brief campaign season as it sharpened the differences between candidates.
