Hello, If the receiver need the money, i think they can use CPFP (Child pay for parent). This is easily explained here : https://twitter.com/BTCillustrated/status/1747586527826174005
From my understanding, in the funding transaction for a lightning, the receiver is a 2 of 2 multisig. So I'm not sure how it would be done in this case. Maybe a splicing transaction or liquidity request might do this but their system would select the transaction fee again, potentially subject to the same problem.
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