This and zero-conf channels are still like wat to me. Although virtual payment channels might not require the trust that zero-conf ones do. [I haven't read the papers].
Yes, the whole Lightening arena is something of 'mystique' to me. I've a node, but it's not funded as I don't understand enough about it.
I'm running the MyNode software, which comes packaged with some Lightening goodies. I've already found some very good info from the links posted here on SN, (my thanks to OPs) so I'm sure I'll get my head around it; it just takes time.