Marauder Gen3 Trigger Group Question(s)

[BBGunn]

I've been studying Pumacarl's G3 trigger group pics (thanks PC) trying to decide how I would go about adjusting/modifying the trigger group to make a nice, light, crisp single-stage trigger if I was to buy a G3. PCs pics show clearly how all the parts of the trigger group interact, except one.

My question for this post is about the safety. When the safety is applied, does the safety bar block the 'sear engagement lever' (middle lever) from movement..., or does it block the 'trigger lever' (bottom lever) from movement?

Thanks.