по сути есть основной таймлайн который UC, и все остальные которые ему альтернативны. Основной тянется с 79го года и в нем есть сюжетная связанность разных сериалов и полнометражек. А вот альтернативные таймлайны вообще ничем не связаны кроме наличия титулярного робота
эй, как так не связаны
Turn A Gundam has been cited by Director Tomino and other sources as a show that would unify the stories from the various Gundam series into one.[1][6] Throughout the show, mobile suits resembling those from the eras depicted in previous Gundam shows and indicated to be preserved by nano machines for thousands of years, including as those of the Universal Century, are excavated by the show's various factions. In Episode 42, this plotline comes to a culmination as the history of the Correct Century timeline is shown in a collection of clips known as the Dark History (黒歴史 Kuro Rekishi), which is revealed to be events that took place in different Gundam series prior to Turn A Gundam, thus making those events part of the Correct Century timeline's history
