There are three. The first one (May 10) associates the usage as snowball avalanche. The second one exactly a week later, links to a news article, "Inspector General Will Declare FBI, DOJ Broke Law in Clinton Email Probe," and nothing else.
The third one is exactly another week later (May 21). That one asserts:
Once the 'extremely guarded & highly classified' information is finally revealed to House investigators, DNI, public etc., RR must recuse or forcefully terminated.
[RR] problems.
It is this Q-drop that suggests looking into succession order for DAG. Part of that Q-drop is a long block quote. I decided to search for the original source of that block quote, and found it.
Blockquote in Q-drop 05/21/18 (Mon) 19:04:49 622a94 No.1497716 is from:
Steve Vladeck: Who is Rachel Brand, and how does her resignation affect Mueller's Russia investigation? - NBC - Feb.10.2018.
I don't think the article changes any of what was discussed around this May 28 Q-drop. Panuccio is acting AAG. His clock runs out 210 days from the day he was put in "Acting Associate Attorney General" position.
My opinion is that Trump will let the Mueller operation wind-down without him (Trump) taking any direct action. Trump is not going to fire Rosenstein nor will he order Rosenstein's replacement to fire Mueller. Too much baggage, and the baggage would taint the "nothing there" conclusion. Whoever replaces Rosenstein will "organically" do the right thing, just as Rosenstein "organically" did the right thing by recommending Comey be fired.
But note the trigger in this Q-drop ... it isn't the 210 days. The 210 days is the drop dead timing for Panuccio. The trigger is revelation of "the 'extremely guarded & highly classified' information."
I don't see any significance in the time differences, but I know how some people enjoy numerology.
If anyone has info or links, please let me know.
This didn't get much press coverage (surprise-surprise).