This is really useful!!!
I understand that I would need to use https://liquid.boltz.exchange to convert from LN-BTC to L-BTC, which would be sent to SideSwap). Then from SideSwap I would do the conversion L-BTC to onchain BTC.
Have you tried this yourself?
The problem with this approach in my case is that it’s prohibitive to do Lightning transactions from Muun right now.