The delay with REO's

I ran into an unusual situation about a month ago, with an REO property.  In my area there have been a lot of scams, with people ripping off mortgage companies and couples buying homes.  After spending about an hour of research, I found that it was indeed a legitimate property and the realtor was confirmed to be the listing agent. Which relieved my clients.  However, they are frustrated as to the delay with the investor getting back to them on the property.  I know companies are swamped, but if you are the selling agent, do the other agent a favor and don't claim to be able to get the response within a week or two (unless that is the track record for that company), if the investor is swamped with short sale offers. My experience with REO's is that it takes them a minimum a month to get a response to a short sale offer or REO offer.  What has your experiences been with REO's?