I hate to throw in speculation like this, since we all know the way that film editors can fake us out, but I think going into a round-the-world trip that consumes every minute of the day with someone that you'd never met before would be extremely nerveracking for a competitive person -- and both Hayley and Blair seem very competitive.

Frankly, the editing had led me to think that they wouldn't be around much longer. But then I saw this interview with Jonathan and Harley:

http://www.realitytvworld.com/news/exclusive-jonathan-knight-and-harley-rodriguez-talk-the-amazing-race-%28part-2%29-17646.php

Reality TV World: Out of all the blind-dating couples, who could you see working out in the end. Do you think any of the teams will come out of this with an official relationship or at least a real romantic connection?

Jonathan Knight: Ugh, ugh, um. I don't know! They all seemed to be pretty adamant that they're not going to be couples, but I mean, I know just talking with the other cast members that Blair and Hayley seem to be hanging out a lot -- which is really shocking to me. (Laughs) Because they were fighting so much on the show, and now, they're spending a lot of time together. So, I don't know, I'm kind of pulling for them! They are kind of my underdogs for the singles.

So, is the editing disguising that they may have won?

Well, just this month, this video starring Hayley was posted online:
https://www.youtube.com/watch?v=_Dtg6eEvQD0

Why would you film a "breast augmentation" testimonial from Hayley for YouTube if she didn't at least make it to the final three? So I'm pretty sure that Hayley & Blair make it to the end, and actually I'd be surprised if they don't win.

It looks like they managed to work their way through any problems despite being filmed constantly. Editing!