Seems like the transaction is now invalid since the input was replaced with a transaction that replaced one input and output.

Original input: 0c3befe166b4f957a98e050f711c54bd5851716a38de6db1a8d0edc770fd68ed
Replaced by:   74419bc519df0bb513b6201908aca21f7fb33d59b03204daa30457aabc590260

Interestingly, the long transaction chain is a bunch of 1sat/vB fee rate txns as if it's intended.
Whatever the transaction is for, tell your friend to do not finish the deal without waiting for confirmations, no matter what.