From the pastebin: https://pastebin.com/V5nTeh4h
Tegra X1 on TSMC 20nm is 116mm2, while the Tegra X1+ on TSMC 16nm FinFet is 100mm2. Nvidia Orin (full T234) is 455mm2. If we assume that T239 (= Switch2) is about 50% the area, we end up with a die size of 227mm2 on Samsung 8N.
That would be a big boi die. From what I can find on the interwebs, Steam Deck's APU is 163mm² and a desktop 4070 is 294,5mm².