Context: How to do full-page figure with proper orientation and captions in opposite page?

I’ve searched in ConTeXt manuals and here, but couldn’t find a way to achieve these 4 requirements altogether:

1. Place a figure as full-page figure (works without other requirements)
2. Change orientation accordingly (if it’s a landscape PDF, for instance)
3. Make that using setupfloat(or other setup), not directly in placefloat
4. Place captions in another page (ideally on opposite page)

Ideally, I would write something like

...

definepapersize[rotate][A4, landscape]
definelayout[expandrotate][topspace=0.5cm, topdistance=0cm, header=1cm, headerdistance=0cm,
                            height=20cm, footer=0cm, backspace=1.5cm, width=27.2cm]

definefloat[bigfigure][bigfigures][figure]
setupfloat[biglandscapefigure][default={page,none}, width=paperwidth, height=paperheight,
            before={setuppapersize[rotate]setuplayout[expandrotate]}] % setupfloat doesn't have 'before'

...

startplacebiglandscapefigure[title={a little cat, taken from https://placekitten.com/}, reference=cat]
                    {externalfigure[https://placekitten.com/200/300]}
stopplacebiglandscapefigure

And achieve something like this (schematic example, made with Inkscape, out of scale):

But with above code, I just get figure in separate portrait page, cropped by page boundaries (couldn’t even figure out how to make caption in another page)… Also, I’ve searched in reference, graphics and details manuals, without success…

Related:

• Figures/Floats and Section Headings on New Pages in ConTeXt?
• ConTeXt: Place rules above and below floating figure