splitter aio

Hi , I Have a corsair h100i pro RGB PLATINUM with 2 ML PRO RGB fans I was thinking about changing my case for a corsair 465x RGB with 3 LL120 fans My AIO has 2 Fan header for the 2 ML fans Can i connect a fan 2 way Spliter for 1 header of the AIO for the 2xML fans and a 3 way spliter for the...