I would be curious myself to see how it's done.
I'm trying to figure out if lightning routing data is publicly available or if only the routing operator has insight into the traces.
Discussion
Critics of bitcoin privacy say that lightning is not privacy strong but if only the operator has the information and I use my own node it might be untraceable. 🤔
that's what I'm trying to figure out.
so far it does seem that way and if this is the case, you'd have to listen to the network traffic directly and inspect it which is not am easy feat if it's secured behind tor & ssl, plus then you would also need to piece together that information (which arguably could be automated)