Your transaction fee and the priority chosen is what determines your first acceleration, if you make use of a lower fee, you are more likely to fall on a long queue waiting, you will determine the acceleration to your transaction from the fee rate you choose to pay, if i get your question right.


I should get something from here, when making a transaction acceleration, each block confirming your transaction or which quired withing that your ow share of transaction is included will bear the same rate of transaction fee as required with that specific time and your transaction was included to a specific block because it meet up with the required fee rate for that particular time needed to get your transaction confirmed along with others on the same block, you can read more or chain reorg. https://cointelegraph.com/explained/what-is-chain-reorganization-in-blockchain-technology

This is probably very hard to calculate.

Reason being is that a low fee transaction usually is bumped off the mempool. Or it’s never even broadcasted with most nodes.

Then if the sender uses RBF then it appears like a new transaction. Only certain nodes can tell that it was accelerated with a higher fee because they see 2 transactions which might trigger a double spend.

Agree that it may be hard to calculate. Not impossible, though. There are 0 fee txs included in blocks - apparently out-of-band. Also there are accelerator services that report their activity, e.g. "https://mempool.space/acceleration".