So, just to confirm, you’re talking about a USB hub here, right? -- Thank you for your patient answers. Yes, it is a USB hub that allows multiple devices to be connected to a single Type-C port. My connection method is: Peripheral ------ iPhone ------ Mac. With this setup, I can confirm that the peripheral is working properly, and I can manage the iPhone in Xcode without any issues. I can also use Console for debugging. However, I still cannot enable RVI. Is there a way to enable RVI in this topology?

So where does the hub fit into that diagram, something like this? Yes, that's how it's connected. The main connection port of the hub is connected to the iPhone (I tried connecting the main port to the Mac, but at that point, the iPhone couldn't correctly recognize the accessory). I also tried to verify whether the order of inserting the devices affects the RVI startup results, but no matter which hardware the hub is connected to first, RVI ultimately fails to start.