Yeah, (neo)vim can do that for non-lsp with a filetype like html.css or similar whichbloads both syntax rules possibly with customizations to determine when it

Yeah, (neo)vim can do that for non-lsp with a filetype like html.css or similar whichbloads both syntax rules possibly with customizations to determine when it switches into which of the two modes. But again, I don’t know how that works with lsp.