No they were not. The rally was blocks away and the Oath Keepers, Proud Boys and/or other militant groups were at the Capitol well ahead of the rally attenders. What they discussed among themselves may or may not happened. So much disinformation has been put out about that day that getting to the real truth may never happen. But it's for sure that the lies about what happened greatly outweigh the truth that we know.
Again I make no excuses for those who attacked Capitol Police and/or broke into the Capitol illegally and did other damage. Those were reprehensible acts and should be intolerable to any real American just as the acts of the rioting BLM/ANTIFA people should be. All should be held accountable and at the very least pay restitution and jail time is warranted for many.
I also think those Patriots who did no damage but crowded onto the porches and balconies did President Trump no favors either. They were not in any way criminal but exceedingly stupid. And those peaceful protesters who went into the Capitol after the Capitol police let them in were even more foolish and gullible.
The vast majority of those attending the rally did none of that. But they are tarred with the same brush by the left.
Couy Griffin's only crime was being there. He was tried and convicted of being on the Capitol grounds 'illegally' but all charges of any disorderly conduct or other inappropriate behavior were dropped.