I think that from what I recollect - and can check videos later - the "oyster" was around already and a "few" skaters (thinking / recollecting that Chio was mentioned as the "Korean skater" who was doing the oyster but not named her by sir name), and when CZ started this she put her head back further - "in middle of the "oyster" -
and renamed / or newly named it due to the slight variation - the "peal" because of where her head is during. Peggy WAS calling it the Oyster and was corrected / questioned by Terry (remarking they would speak to her later and ask). Later in booth while interviewing Mirai and Caroline, Terry or Kurt asked and she clarified SHE (Caroline) calls it the pearl.
They were also commenting during there discussion it was not a "totally new but a variation" and I believe used the Bielmann as an example of how they get these names associated with "elements."
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