on Solana there are two ways to send a transactionyou either send to i) TPU via an RPC or ii) Jitofor i)RPC sends to the txn processing unit (TPU) for the current block leader over QUICwhere the % of QUIC connections is higher for higher-staked nodesfor ii), this gets complexbut essentially, most Jito nodes have a reverse-proxy relayer in front of the TPU, and these relayers hold the txn for a durationthere are several micro auctions that happen during this time, and you increase your priority via your rati ...