Can someone explain (spoilers)

Just one of many inexplainable plot points in a movie riddled with them.

Those, along with a mediocre ending, gives this a 5/10 for me.

Cannot recommend, especially to those looking for what you might expect from M Knight when he's on his game, however, Hartnett's performance was decent.

Yeah, this is another one of those details that require a massive suspension of belief. I guess the possibility is that he conveniently had SWAT gear already down there? I don't know

I think he could've taken out Lady Raven's driver when she was in the bathroom. Remember that Raven texts him to call the police. So the driver might've went in the house to check on her, and Harnett might've whooped his ass or something. That part might be explainable

I can explain it. Bad writing. That explains the whole movie.

suspension of disbelief

just watched this. I think this part went by too quickly and sloppily.

yes, tunnel to neighbor, where he...
took out swat guard, stole hat and coat - we hear someone mention this moments later I think....
then, there was a split second where he says something maybe to the driver about getting the civilian/car (the singer) out of the are (I think if I recall) and the driver gets out and he gets in.

it's all quick and fuzzy now - they made it work with him pretending to be swat and getting the people and vehicles out of the area. or something. maybe I watch the part again and come back....

Can't be explained which is why they don't show him getting the gear... you just have to accept it so the story can unfold... so basically bad writing.