Simone Biles warms up prior to the Women's Senior competition of the 2019 U.S. Gymnastics Championships at the Sprint Center on August 11, 2019 in Kansas City, Missouri.

KANSAS CITY, Mo. — The Simone Biles that captivated national primetime TV on Sunday might not have existed if she didn't change her mind back in 2016. The double-double. The triple-double. The voice for accountability and change in her troubled sport. All gone.

Aimee Boorman, Biles' coach from age 7 through the 2016 Olympics, decided before the Rio Games that, post-Olympics, she would move from the Biles family gym in Texas to an executive director position at Evo Athletics in Florida. Biles would not be following her.

At one point, "I didn't think she was going to come back," after Rio, Boorman recalled Sunday by phone from Florida, "because she was saying she didn't want to come back."

Biles captured a record-tying sixth U.S. all-around title by a hefty 4.95 points this weekend. She has won 20 straight all-arounds dating to 2013, returning last year after a one-year break to dominate more than before.

She became the first woman to land a triple twisting double somersault on floor exercise and the first to land a double twisting double somersault off the balance beam. Both skills, should she throw them at October's world championships, will be named after her. Biles already has one floor tumbling pass and a vault named after her.

Biles, speaking after Sunday's coronation, acknowledged Boorman's recollection from three years ago.

"Yes and no," she said. "I really did in that moment feel like I was going to be done, but there was a slight chance that I would want to come back. Everyone's like, oh, you're going to come back, and I feel like I fought it more."

Boorman sensed as Rio approached that, more and more, Biles wanted to go for another Olympics.

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"I always thought in the back of my mind, why wouldn't she come back?" said Boorman, who is still friends with Biles, though their conversations aren't about gymnastics anymore. "It's so easy for her. At 22, it hurts a little more on her body, but it's still not hard for her."

Biles said shortly after Rio that she would take one year off from competition. She performed in USA Gymnastics' post-Olympic nationwide tour, breaking a rib at one stop but soldiering on without watering down her routines. She suffered perhaps her most high-profile defeat, taking fourth on "Dancing with the Stars."

She found two coaches to succeed the irreplaceable Boorman: Cecile and Laurent Landi, who guided fellow Texan Madison Kocian to uneven bars silver in Rio.

"If I had to pick coaches that I would want to take her, it would be you two," Boorman messaged Cecile during the interview process.

The Landis set out to build on what Biles had accomplished with Boorman. The new skills that Biles debuted in the last year? She had already been doing them in practice in the last Olympic cycle.

"Probably 2015, at some point I asked her if she wanted to continue to upgrade or focus on being really clean and consistent," Boorman said. "We decided to take the safe route."

By then, Biles was working on a three-year unbeaten streak. Though other gymnasts sometimes had more difficult routines, Biles would prevail on the strength of her execution scores.

"There wasn't any reason to push it," Boorman said. "That confidence had built up."

The Landis helped Biles find new motivation in implementing those unprecedented beam, floor and vault skills and overhauling her uneven bars routine.

Biles said she doesn't have a goal to get a skill named after her on every apparatus, but she does submit one unprecedented bars move to the authorities before competitions, "just in case I mess up and do an extra half-pirouette."

At last year's worlds, Biles had 2.7 more points of difficulty than any other gymnast. That allowed her to win by the largest margin in history despite two falls (and the fact she competed with a kidney stone).

She averaged nearly two points more in start value than anybody else on each night this week. On the first night, she ranked fourth in execution scores but still led by 1.75 points overall. Biles wore a GOAT leotard at practice on Wednesday, and why not: she now starts competitions with a sizable advantage, knowing that nobody dares approach her difficulty.

Biles contends that, in this Olympic cycle, she has fewer people to prove with her routines and results. "I'm just doing it for myself, and I think that's the beauty of it," said Biles, who between routines on Sunday grabbed her phone and retweeted videos of her skills that had gone viral ("I didn't want to be the last one to see it," she said).

The drive remains. She was nearly in tears a minute into the competition Friday after overcooking the triple-double and putting her hands down on the landing. She used an expletive to describe her bars routine.

Other gymnasts have come back with unfinished business from the Olympics. Notably Aly Raisman, who wanted and grabbed an all-around medal in Rio after missing a bronze in London via tiebreaker. Told of that, Boorman brought up the Rio balance beam final. Biles slipped and put both hands on the six-inch apparatus to keep from falling. The two-time reigning world champion ended up with a bronze medal.

Beam may have given Biles the most satisfaction between the two days in Kansas City.

"I finally did what I did in training," Biles said, "so [Cecile Landi] doesn't have to go back and say, Simone, we have to work on beam."

Biles reads a Daily Skimm every morning and owns the book, "How to Skimm Your Life."

"How to choose wine from a wine list. How to do your bills. So it's a little more adulting," said Biles, who is the only non-teen to win a U.S. women's all-around since 1971. It's another sign that this cycle is different.

"The first four years went so well, so see how this time around feels," Biles said of her decision to return to training in November 2017. "It went pretty well."