if you buy the channel and deploy liquidity via LN, u don't use ur own UTXO's, so the UTXO's produced from future on-chain operations are not linked to u. however, the behavior of those future UTXO's is still linked to splicing in & out of a specific Phoenix channel. sometimes it matters, sometimes it doesn't. 

i found Phoenix very useful for large swaps thru Boltz and the success rate is very high. the downside is the high swapping fee and high LN fees through ACINQ, so i am starting to think how to minimize those fees. 

zapsammy

bitcoin

Tinkering with Phoenix Wallet

PictureRoom

Great, thank you. 

I did create the channel on Pheonix via LN. I'm not sure if I understand what you mean by when you say "if u have originally created the channel thru an LN payment, this operation will only link the swapped-out UTXO to the future spliced-out or spliced-in UTXO's."

I've been using Boltz to do swaps back to onchain to cold storage after obtaining more bitcoin on RoboSats (or elsewhere). 

So the thread would be:
From Robosats (or payment from a sale to my node) -> Boltz -> cold storage