Originally Posted by Anthony-Howard
Now I may be being thicker than a whale omelette but what other sources do you have? Why can't you just route the Sky Q though the HDMI input on the Oppo 203 and use it's HDMI audio output into the HD621? At the worst case you might need an extra HDMI cable but surely you can find one for less than the £1500 UHD722 upgrade cost???
This is the best advice I've heard. I did a bit of research and I think some people had trouble passing HDR content through this input. Still researching. For me two 4k devices would be a reasonable stop gap measure. But I would want both to pass HDR.

G61R, DSP5200, DSP5200HC, DSP3100, HD621, Oppo UDP203, HDFury Vrooom, MC200. Happy!