Pence was not in the chair - that was Sen. Grassley
CSpan showing protestors inside the building, crossing through Statuary Hall. I am not sure where they are going. CSpan says they are going to the House and Senate chambers. I believe that the doors to the chambers have been locked but I have no sauce.
https://www.c-span.org/video/?507672-101/house-debate-arizona-electoral-challenge&live