I was toying around with NavMesh in a hallway to get to understand the basics but I wasn't really happy with my result so I hit exit when an error popped up. It said something like this:

Error: NavMesh (00123) and NavMesh (00627) should be connected, but they are not. Would you like to save?

So I hit exit thinking it would just not save and I could investigate but it saved over. So I'm wondering, is this something I should be worried about and try to fix, or should I just shrug it off?

Thanks in advance,