Is it possible to connect two Xavier NXes over PCIe?

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
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Hey everyone,
I remember from AGX Xavier that two developer kits can be connected over PCIe with a crossed cable. However, that developer kit have an PCIe x16 interface on it while the NX dev kit has not. So, my question here is: Is it possible to interconnect two Xavier NX devkits (over M2 slots or something else) over PCIe? If possible, how?

Thanks for your time and effort in advance.

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Please refer to NVIDIA application note NVIDIA Jetson AGX Xavier PCIe Endpoint Design Guidelines (DA‑09357) for details