Our institution has defined a prequalification from an application using the variable of a credit report. If we pull a credit report, we then have an application. If there is no credit report, then we have a prequalification.
First, "Prequalification" is a defined term. Refer to the Commentary to §203.2(b)#2. I don't believe you can define a prequalification as one in which you have no credit report.
Second, what you're saying is that as long as a loan officer doesn't pull a credit report, they don't have an application. I don't think that's OK either. "Application" is defined in §203.2(b). Also, the commentary to this section instructs you to look at Reg B's definition of "application" where it is further defined.
An application is received and THEN you pull a credit report. Not having a credit report doesn't make it not an application.
I'm not sure the rest of your question is relevant in light of this info. (not trying to be rude, just don't think I can help you).
Also, does your institution have a preapproval program? This makes a big difference on how to answer your questions.
I highly recommend you purchase the CD-ROM training I did on "Applications: Preapprovals and Prequalifications". You can find more info. here:
http://www.bankersonline.com/store/product_info.php?products_id=1103