h/t tiger claws
All the final decisions - including control of the Sergeant at Arms for the Senate - are by majority rule.
<><> Republicans control the Senate and the Sergeant at Arms.
<><> Dems can be forced by the Sergeant at Arms to attend the presentation of the evidence of the fraud;
<><> Dems can be kept quiet during the said hearing by the Sergeant at Arms.
Pence can go either way Jan 6: (A) decide to heed any advice, or, (B) follow his conscience.........but he does not have the final say. The legislature does.
REFERENCE
https://www.senate.gov/artandhistory/history/common/generic/People_Parliamentarian.htm
Questions about the Senate? Email a Senate historian at web site.