I don't know what the duel is, something involving tables lined up in an order, some order to be followed. In any event, Steve is worn out and old enough to understand that his chances in this Survivor game are only bordering on remote, so he's out, doesn't quit but also doesn't try very hard.

I don't think Amber shows up. Her pregnancy could help Rob win jury sympathy, so I don't entirely rule it out. But an equivalent Survivor buddy pick for Russell would have been who, Shambo? And what would Russell have made of Amber turning up? (I think Rob and Russell both knew in advance they were picked for their mutual rivalry.)

I think Rob wins the immunity challenge, the shot of him at the top of the structure shows he's pushed himself very hard to win this one.

So, how does Rob decide which of his Ometepe to eliminate? Grant can't make a move against him since he has II so Grant doesn't do anything to upset the natural order of Robness. Andrea has a good social game and the Zaps favor her, how did that happen, which buddy left her alone to do that? It's made up, a contingency plan, nothing else.

Ashley hates Phillip and wants him gone, this is her big move in the game. Phillip in turn doesn't care for the lazy spa girls. It is good for Rob's game that inter-Ometepe personal dynamics force him to back one side or the other, such divisions remove the onus of an utterly Rob controlled blindside backstab. Crazy as Phillip is, he's still useful to Rob, Ashley is just expendable. Grant and Andrea will be happy to get rid of someone who eats and enjoys the good life but does little to help out in camp.