Transactions are included in the blockchain in sets. Each block will confirm a set of transactions, and the block will include transactions in the order they choose.

It is also not guaranteed that a transaction you broadcast will be included in the next block found.

So a transaction could be broadcast from address A to address B at a given time, you could broadcast a transaction to address B shortly thereafter, and the order of the two transactions will be up to whoever finds the next block.

You could potentially include a very large transaction fee to your transaction to have an increased probability that your transaction will be included in the very next block, potentially higher in the next block than the transaction from address A.

But realistically, many will see that all transactions confirmed in block x as all being solidified at the same time.

Transactions are included in the blockchain in sets. Each block will confirm a set of transactions, and the block will include transactions in the order they choose.

It is also not guaranteed that a transaction you broadcast will be included in the next block found.

So a transaction could be broadcast from address A to address B at a given time, you could broadcast a transaction to address B shortly thereafter, and the order of the two transactions will be up to whoever finds the next block.

You could potentially include a very large transaction fee to your transaction to have an increased probability that your transaction will be included in the very next block, potentially higher in the next block than the transaction from address A.