I personally don't believe its the end of the world to have some overlap in your liability. 

In my limited experience(100+ lease ups) I would say that around 600 and lower you will start see multiple negative variables that usually overlap with my other non-score specific red flags.red flags=instant rejection=previous eviction or unlawful detainer, felony conviction, vehicle repossession, bankruptcy, foreclosure, multiple collections items...if it's BK or foreclosure or multiple collections, they can be overlooked with a maximum legal deposit(2months in ca) if they have solid income verificationWith C property you may have tenants with 400-500 score, because they have no credit history, or limited history with $50 unpaid phone bill or unpaid ER visit, they don't even know about because of moving around or just living check to check, BUT, they are a mechanic, heavy equipment operator, retail manager for 4 years at the same business that has been there for 50 years....

As with most things that go wrong, there isn't one clear cut simple answer, but rather multiple overlapping and intertwined partial causes that if one didn't happen, everything would have worked out fine. 

The remodeling work tends to overlap and phasing the work is critical to avoid additional work or delays.

These are different areas of focus, and while there IS some overlap for certain aspects of a transaction, an expert in one may not be expert in the other. just my 2 cents...

On page 162 (of the PDF, not sure of the printed version) I see that the gray box is overlapping the page number. 

After buying my first home this year, I realized how much overlap there is between engineering and real estate. 

If you get too many addendums flying around with all kinds of overlapping dates, you're going to end up with a much more confusing paper trail. 

House hacking was just an idea but not a must :)  :)  The model there is definitely vacation rentals, vs. short-term rentals - there's a lot of overlap but the clientele is different.  

Yes, this is all overlapping.