Ok, so I'm curious to see if anyone else had this problem.
I'm currently doing the Bunker Hill quest siding with the Institute, and of course the Railroad and Brotherhood are both battling it out. Once the synths are deployed, they start to engage both Brotherhood and Railroad targets.
Now the Railroad is hostile to me, which makes sense. And I figured that since the synths were fighting the Brotherhood, that they would be my enemy as too. Well as I'm beating the everloving crap out of a Brotherhood paladin, I suddenly realize he's not fighting back. And in fact, none of the Brotherhood are.
This wouldn't be so much of a problem if attacking the Brotherhood made them hostile: but it doesn't. I can literally hack Brotherhood paladin after paladin to death and they never so much as raise a fist in anger at me.
Is this is glitch or this this intended? Anyone else seen this? If its intended its about the dumbest thing I've ever seen.