Now that the season is over, it's time to re-ask this question?
What if the cowboys didn't give their EP to CaroJen? Who'd receive it from the cowboys instead? Will Mark & Mallory survive Leg 2 if CaroJen didn't get the EP?
If Caroline & Jennifer didn't get the EP from Jet & Cord, Caroline would have been stuck there for a long time. The only thing that could save them was Mark & Mallory's team breakdown at the Detour.
I) If Mark & Mallory were eliminated
L03: Brendon & Rachel would get on the first flight to Kota Kinabalu while Caroline & Jennifer would be on the 2nd one. Joey & Meghan would probably still be eliminated with their taxi gaffe as Caroline & Jennifer didn't struggle much.
L04: Caroline & Jennifer didn't struggle at all here and probably weren't last with Margie & Luke and Brendon & Rachel breaking down at the Detour. Everything would be as it was.
II) If Caroline & Jennifer were eliminated
L03: Mark & Mallory would be on the second flight along with Jessica & John and Joey & Meghan. With M&M's unsteady relationship from the last leg, they could be a ticking bomb with all the coordination needed at the rafts. It depends on how far back Joey & Meghan were. Assuming they rebuild their teamwork and Team Youtube was eliminated:
L04: Mark & Mallory would be in the mix (probably third flight to Kuala Lumpur). I'm betting they would have trouble with the Detour, but not as much as Brendon & Rachel.
L05: If they weren't as far behind as Margie & Luke or they stuck with Brenchel on the Singapore connection, Team Kentucky would survive.
L06: No one were missing trains in this leg, so it all comes down to the Detour. If they weren't one of the first four teams at the elephant detour, they would be in the bottom 3 (unless they quickly figure out the paper mache detour). Either way it's a non-elimination leg.
L07: With the randomized luck of taxis to the Spanish Steps, plus the chance that Mark & Mallory having the Speed Bump if things didn't went their way last leg, Team Kentucky could be eliminated. Jessica & John/FT & BE/Leo & Jamal helping each other didn't help either. But if things go their way, Team JJ would be eliminated and:
L08: It's them versus FT & BE. I'm assuming no one would U-Turn them unless it's for survival. And If they are stuck in last, FT & BE would try their hardest to cling on to them. I really don't know how long the Globetrotters took at the calligraphy Roadblock, so if Mark & Mallory did good there, they'd be fine. This is assuming they didn't get lost worse than FT & BE.
L09: Everyone was pretty much together. The Accidental Alliance wouldn't form (I'm hoping). Teams left: Dave & Connor, Jet & Cord, Leo & Jamal, Mark & Mallory, Brendon & Rachel. Anything can go from here I guess
Still, it's a non-elimination leg.
L10: The Double U-Turn. The main targets are still Jet & Cord. Mark & Mallory I think don't pose a threat. Dave & Connor and Brendon & Rachel no longer have their U-Turn power.
A) If Mark & Mallory were at the top of the pack, they might U-Turn Leo & Jamal, and Leo & Jamal would U-Turn Jet & Cord. The Cowboys could be eliminated.
B) If Mark & Mallory were at the bottom of the pack, there is a chance they would get U-Turned by Jet & Cord. Mark & Mallory would get eliminated here since Jet & Cord didn't seem to have a problem with the dance detour.
L11: I would be surprised if Mark & Mallory reach this leg if they didn't goof up in Leg 2. With Leo & Jamal's constant navigational gaffes, there is a chance they'd reach the Final 3. Of course, this is assuming they stayed consistent and not blow up again.
If Caroline & Jennifer didn't get the EP from Jet & Cord, the most likely candidate is Mark & Mallory. If Mark & Mallory survive Leg 02, the Cowboys could have given them the EP before the flight to Kota Kinabalu. But you never know what is going on inside Jet & Cord's minds with the EP.