Pelosi met with the Parliamentarian ahead of Jan 6 and changed the rules on certification voting.
She held meetings with a group of people at Camp David, iirc. I believe they war gamed the event, which included refusing 45’s request for troops.
I imagine 45’s tardiness in speaking gummed up their timeline.
The full story’s slowly emerging in dribs and drabs but the full picture WILL emerge. I’m only sorry that a few of the guilty will face judgement from the Creator before getting what they deserve while still on this Earth.