llinois law requires that renters be notified that their residence is in foreclosure and they will be evicted in 120 days, but Dart indicated that the law has been routinely ignored.

Interesting.  Illinois, like Florida is a lien theory state which usually means a mortgage is used rather than a deed of trust (I am deliberately dumbing this down). The difference is whether you have a judicial or non-judicial foreclosure. In a judicial foreclosure, the lender goes to court to foreclose. In the one title theory state I practiced in, the lender advertised the sale under strict rules and the only way it went to court was if the homeowner wanted to stop it alleging some defense.

Here in Florida, we typically name and serve John and Jane Doe summons in foreclosures and send the process server out to serve them on any tenants which may be living there at the time the foreclosure is filed. We also do unknown spouse summons in case the borrower got married since the mortgage loan. I wonder what the "nuts and bolts" practice in Illinois is in this area...

In normal times, a mortgage foreclosure in Florida could be done in 60 to 90 days, from filing date to sale at the courthouse.  

These are not normal times, however. Getting a hearing date is problematic in South Florida right now. Judges are granting 90 day sale dates (30 to 60 used to be the norm). The procedure is file the complaint, serve the defendants, wait for the response, if any. Did they allege a defense? Again in normal times, most people write an informal response, e.g. I lost my job and can't pay. That typical response is an admission the debt is owed and not paid and makes the foreclosing parties' life easier. If no response,  motion for default, file the usual affidavits and motion for summary judgment, the MSJ hearing and then sale. You don't want to know how fast it is in a title theory state (lender's paradise), that doesn't have any homeowner protections.

Another consequence of this crises, is that community associations are losing assessments (here in Florida and anywhere the association is 2nd to the lender's mortgage/deed of trust) and cannot upkeep the common area without assessment hikes. This in turn increases the financial burden on other homeowners in the association, which may be all the push  they need to fall into foreclosure. Services association members pay for are cut, property values plummet, a middle class homeowner's biggest asset is devalued.