I believe that it went well. At the end of the interview, they asked me for references, and for the name of the supervisor at my previous employer, a place that I was employed for only 7 weeks. I left because my current employer offered better pay and benefits. The previous employer offered little pay and no benefits.
References are tricky and they take time and skill to check properly.
All that he or she is obligated to divulge is the verification of dates of employment and the salary. Anything more must be submitted in writing. Unfortunately, this is not always the case. Certainly in the case of a good reference an employer usually is eager to respond to the phone call and extol the praises of the individual. Sad to say, it does seem that enough is communicated to a potential employer if a reference is only willing to state dates of employment and a verification of salary.