What that Trustee does can very, from transacyion to transaction.
The Bank may hire a Company to handle the Foreclosure paperwork and sale of the Property.
So, when you are making an Offer on the house, you may be working with a Property Management/Auction/Disposal company, instead of the Bank itself.
Most of the time, when we find out that we have to deal with one of these companies, we curse.
Good luck and may God bless