Am I right in thinking the pikmin song post was on cohost first and everyone else is getting it a week later or was it actually on tumblr first

Am I right in thinking the pikmin song post was on cohost first and everyone else is getting it a week later or was it actually on tumblr first
It looks like it was on Tumblr first, by less than an hour (Tumblr says Nov. 19 10:08 PM while Cohost says 10:56 PM for me, assuming they're both doing timezone logic right)
I did have the same train of thought though, it happened not to cross my Tumblr dashboard until a week later and I assumed it was only just reaching Tumblr. I saw a screenshot of the Tumblr post going around Twitter and my kneejerk reaction was hey!!! not fair!!! that screenshot should be a chost!!! until I actually double-checked