For example, I went in to met a coworker and fix her laptop. While I was there the devs in front of me were discussing a thing that my team was working on. I didn’t know they needed that thing and they didn’t know we were working on it. I took new information back to my group.

Ok, but that just demostrate that you have no communication between teams. You get the information by sheer luck. have you been there 10 minutes earlier/later you would have missed it.

While bullshitting with the tech support manager I learned some things about their policies and procedures. Found out I had made incorrect assumptions and learning about those helped me in my role.

Again, non clear communication between teams and again you got the information by sheer luck.

True, it has happened because you both were in the office but in a sane environment you would have knows these thing because they would have been documented.