#2 Ambiguous Finish - interference or disqualification
DQ is one of the safest ways to allow both competitors to walk away unharmed. The company used the disqualification approach to stay away from declaring an outright winner from the clash between Floyd Mayweather and Big Show. It was not the ending the fans were looking for, but WWE was able to protect both stars.
Also, WWE certainly will need to concentrate on the business angle after this match, as well as address aspects such as needing to protect Strowman, plans with Fury in the near future among other angles, which will certainly decide the way this clash ends at Crown Jewel.
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A likely path to a DQ could come if Strowman fails to finish off Fury, and in the process also gets frustrated at Fury's resistance throughout the match. Strowman could then cross a line which would lead to disqualification.
Another potential approach for a messy finish could be through an intereference from another Superstar. Either way, if WWE chooses to protect the stars from a clean loss, the match could go the way of the Mayweather and Big Show bout, leaving fans disappointed with the finish.