Congressional Record, Issue: Vol. 166, No. 20 , 30 January 2020

End of Q&A "phase" and on to something rather peculiar.
Famous last words (pdf, p 47) read by the Chief Justice.

NOTICE OF INTENT TO SUSPEND THE RULESIn accordance with rule V of the Standing Rules of the Senate, Mr. Blumenthal (for himself, Mr. Brown, and Mr. Durbin) hereby gives notice in writing of his intention to move to suspend the following portions of the Rules of Procedure and  Practice in the Senate When Sitting on Impeachment Trials during consideration of the question of whether it shall be in order to consider and debate under the impeachment rules any motion to  subpoena witnesses or documents in connection with the impeachment trial of Donald John Trump:
(1) The phrase "without debate" in Rule VII.
(2) The following portion of Rule XX: ", unless the  Senate shall direct the doors to be closed while  deliberating upon its decisions. A motion to close the doors may be acted upon without objection, or, if objection is heard, the motion shall be voted on without debate by the yeas and nays, which be entered on the record".
(3) In Rule XXIV, the phrases "without debate", "except when the doors shall be closed for deliberation, and in that case", and ", to be had without debate".

Read again by Mr. Brown for the named parties, then adjourned without objection by "Moscow Mitch" and The Desk until 1:00 PM 31 Jan.