It's division of labor, not deciding "Well I guess it's not my problem anymore"
One AI focuses on one half of tasks, the other and the remaining half. That doesn't mean they ignore things they see just cuz "That's not my job anymore" It means you would probably tell the other AI about in binary so they can handle it.
Like, you can have multiple of something and still have teamwork while seperating tasks. A team of medical doctors don't or shouldn;t scramble over a single patient, it's inefficient. You each handle something/someone else, but just because you do that doesn't mean you go "Well Scrub McBob's patient is in crit and gasping on the floor and he has no idea. Damn, sucks to be him, that's not my patient can't do anything."
People make multiple AI cuz Paradise station gets *insane* on busy shifts, usually more then a single AI can adequately handle at times. To some AI players, it's a welcome helping hand. Some people still prefer to just go it solo, and I can respect that it would be annoying to them to suddenly have a partner but... that just is what it is. If the construction of a second AI went through all the legal channels, then... Yeah, it was all done legit. You may not like it, I totally get why, but your preferences do not dictate what people can and cannot do in the game.
If it wasn't done legit, mention that. If it wasn't done legit and the captain refuses to give a shit, then PDA the IAA about it.