OK, your sarcastic post has worked, so I'll take the bait. On J6, I was monitoring several live TV channels, in turn, as the event was unfolding. Some of the footage transmitted looked to have been relayed from mobile phone VDO feeds and it was one of these that showed a policeman (uniformed but without riot gear) unlocking a pair of double doors, opening them and moving aside as some protesters walked in - yes, walked - I don't have a count but in this case only a few protesters, at least initially. That scene (above) stopped after that and I can't find the same segment any more, just as I can't find a lot of stuff now.
It looks like there were at least two breaches about the same time - I know that the west side one was much worse, with more people, noise, violence and damage from the Proud Boys, or whoever they were. I think the scene of easier entry was somewhere on the east side. In both cases the police forces were undermanned, especially considering the warning signs from the preceding days and it took far too long for support to arrive.