@ChequerBoard
I think Chloe is definitely dodgy, she is the leak from AC12 that enabled the ambush to happen and her supposed inability to climb the van and open the door is what led to the death of Jonesy.
Also, opening an armoured vehicle door when you're under attack is extremely dangerous.
If a bullet gets in, it ricochets around inside the vehicle until it loses velocity. If several get in, it will cause a lot of damage, probably death, to the occupants. So if you knew there was a gunman at a window it would be a good manoeuvre if you wanted to increase the chance of death of the occupants. Assuming that the body of the car is not so damaged by earlier fire thar rounds start to penetrate, not ricochet,
Vehicles are bullet resistant, not utterly impermeable.
I think he told Steve, but Steve will tell no-one because he no longer knows who to trust. And he knows Hastings would act openly, so won't tell him until there is no advantage left in secrecy.
But as OCG think Lakeland was a rat, they'll assume Steve knows , so he must be a marked man.