Just used Bitcoin Core v28.0rc1 to broadcast and (package) relay a ZERO FEE tx cpfp'd by a high fee child on testnet4, using TRUC transactions. Look at that 1-1 straight flow arrow!
Who is the Unknown miner of block 41657? Thanks for mining my package :)
https://mempool.space/testnet4/tx/8e3f38bf6854dd3c358be8d4f9a40a6dccc50de49616125d27af9fdbe65287eb