But my question was mostly just technical - to better understand these things. So far I haven't parted with a single SAT yet. I don't trade or anything like that.
Yes the trail breaks when you transfer Munn to Speed via LN because it's happening offline and only who control the entry as well as exit nodes can link that if they want to and it is almost impossible via chain analysis to link back the transfer with KYCed address unless you reuse the address again to link with any KYCed funds again.