There were two background press interviews between the media and President Trump’s legal team that were withheld from public release until today.
You can read INTERVIEW ONE – and – INTERVIEW TWO here.

During one question and answer period on Saturday, following the first round of defense points, the key framework of unconstitutional impeachment was raised:
[…] TRANSCRIPT – Question from Jeff Mason with Reuters: Can you walk us through the discrepancy between your side and the House impeachment managers with regard to the President — you guys alleging that the President was shut out from representation during the hearings? They preemptively said that that was false.