LLPM on nRF5340

There is this post from three years ago here that mentioned LLPM isn't supported on nRF5340. The answers had mentioned some issues with LLPM on the network core & that the issues are "currently being worked on" and may be resolved eventually. I was wondering if these problems were actually addressed eventually.

Now, it seems that I can't have CONFIG_BT_CTLR_SDC_LLPM=y when using the nRF5340. So, I can't even increase the LLPM connection interval to >= 2000 us, for example.

Was there ever a workaround that was reached, or is LLPM completely out of the question on nRF53?

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