I would much rather get denied an interview before an away rotation then get denied afterwards. That way you could cancel the away rotation before starting and wouldn't have wasted the time doing the away rotation. Although, I would hope that neither would happen.
You are doing the away rotation starting in November. Many (but not all) programs do not start sifting through applications until late October or early November. Therefore, it would be unlikely to be denied prior to the away rotation. If you were rotating in December or January, that would be a different story.