Seems to simply be a smear, since little to no connections exist, or can be identified. Funny thing is, when that smear first went out, by Bannon and crew, it was that DeSantis was tied at the hip with McCarthy and Paul Ryan. Then, the very next week, Trump endorsed McCarthy for Speaker LOL. Not much has changed since then.
The Never Trumpers DO support DeSantis. There was an article recently about Mitt Romney saying they should embrace DeSantis to beat Trump. I’ve seen several others.