Big Brother live feed spoilers reveal the results of the initial two parts of the final three-part Head of Household competition which kicked off at the end of Sunday night's Season 20 episode.

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[Spoiler Warning: Please stop reading right now if you want to wait until Big Brother's finale broadcast on September 26 to discover who won the first couple of stages in the last Head of Household competition].

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Sunday night's episode of Big Brother on CBS featured some season highlights, including the Final 3 houseguests' perspective on memorable moments as well as some discussions involving former Big Brother player Jeff Schroeder, who was crowned America's Favorite Houseguest for Season 11 and also competed on Season 13.

In addition, the episode kicked off the final Head of Household competition dubbed "Jet Pack Attack" in which Tyler Crispen, Kaycee Clark and JC Mounduix competed.

Each houseguest was required to hold onto his or her "jet pack" while soaring above a fake city skyline and being sprayed with blue-liquid "fuel." The endurance competition became more difficult when the players experienced "kinks" in their jet packs, making it more difficult to not fall.

The last person left standing would win Part 1 of the Head of Household competition, automatically earning a spot in the third -- and final -- part of the competition.

According to Big Brother's live feeds, JC dropped in the competition first, followed by Kaycee. Tyler therefore won Part 1 of the competition.

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As shown on Sunday night's broadcast, Tyler and Kaycee had already promised to take each other to Final 2.

Kaycee and Tyler had agreed to let Kaycee win the endurance part and Tyler win the mental part of the final HoH competition in order to prevent JC from having any power. Tyler, however, watched Kaycee drop from her jet pack, so viewers of the live feeds questioned whether Tyler fully trusts Kaycee to take him to the end.

The results forced Kaycee and JC to face off against each other in Part 2 of the competition. The winner of this round will face Tyler in the final part of the HoH competition, which will air live during the upcoming finale of Season 20 on Wednesday night.

The live feeds showed that Kaycee ultimately won Part 2 of the HoH competition, which probably didn't come as a huge surprise to fans given JC only won one competition all summer long.

The finale will therefore feature Kaycee and Tyler going head-to-head in Part 3 of the final Head of Household competition of Season 20.

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Historically, Part 3 of the HoH competition challenges each of the players to predict how previously-evicted houseguests answered questions about their time in the Big Brother house.

Kaycee and Tyler will likely be given two possible answers to choose from, and based on their knowledge of their friends in the game, they must choose which scenario sounds more plausible. 

The winner of the final part of the HoH competition will be afforded the opportunity to evict one houseguest, taking the other person to the Final 2.

If both Tyler and Kaycee stay true to their word, the duo will go to the Final 2 together -- unless Tyler wins Part 3 of the competition and chooses to betray his closest ally, Kaycee, and honor a Final 2 deal he had previously made with JC as well. As for Kaycee, she has shown no sign of contemplating a Tyler backstab.

The winner of Big Brother's 20th season will receive $500,000. Fans have also been voting for "America's Favorite Houseguest" to award one player a cash prize.

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