How appropriate is to make multiple submissions of research findings to same venue/conference? Assuming the following scenario:

Person A is a recognized senior researcher, and Person B is an enthusiastic junior researcher. Both of them have been working more or less equally on a research project and are interested in  submit the results of the project to a particular venue. Based on the report written by Person B, Person A has written a paper (PA) to be submitted to the venue. Person B doesn’t like the style and some contents of PA, so he makes comments to Person A, who them modifies PA. Person B still doesn’t like PA, so writes a separate paper PB. Since PA and PB haven’t been published, there are citations between them.

At this point, Person A submits PA, which list authors as "Person A &amp; Person B", and Person B submits PB, which list authors as "Person B &amp; Person A."


Is it appropriate to submit PA and PB?
What would be your impression if you were part of the venue’s committee?
As reviewer, what would be your impression about reviewing two different papers about the same work for the same venue?
Any additional consideration?
You cannot submit both papers.  As others have pointed out, most venues explicitly forbid simultaneous submission of substantially overlapping papers.  The answer to your first three questions is the same: Immediate rejection.

In fact, I would go further: Neither PA nor PB can be submitted alone.  It is unethical to submit a paper without the explicit consent of all authors, because authorship implies endorsement of and responsibility for the content of the paper.  On the other hand, it is unethical to revoke authorship from someone who has made a substantial intellectual contribution to the work.  The two authors must work out their editorial differences, like grown-up professional adults, before they can submit anything.

If they can't agree on what to submit, then tough noogies — no paper.