I have case on Stack Overflow where I answered a question having some bounty award. It isn't accepted yet, but it has a positive score. Apparently, another answer provided by another user has some upvotes as well and we have the same score.
If both answers are not getting accepted, then possible half the bounty award will be provided to the one who get highest positive score or earlier answer if both have the same score. So this can be a case where:
I can downvote (by my perspective with a silly/valid reason) his answer and get half the award.
Same can be done by him to me and win half the award.
Is there any Stack Overflow policy or mechanism to prevent/inspect such action?