A key thing to understand here is that Jan 6 was part of Trump's attempts to overturn the 2020 election. We know several weeks of effort, masterminded by Kenneth Chesebro, went into recruiting seven slates of false electors; many with false (forged) paperwork; all of which Trump stayedt involved with. That coup d'état failed because Mike Pence had the VP duties researched and realized he couldn't play ball.

Jan 6 was a quickly thrown-together followup to prevent the counting of electoral votes when they found Mike Pence wouldn't count fake electors. Jan 6 was part and parcel of the false electors plot. That's why the insurrectionists were chanting [b][i]"Hang Mike Pence."[/i][/b]