Well, when a coinbase transaction and a fusion transaction love each other very much…
How a transaction is born, and how wallet syncing works
Transaction Inputs and Fusion Transactions (or “What is the max amount of TRTL I can send?”)
A common question we get from users is wondering what the maximum amount of TRTL they can send is, often because they went to send a (relatively) small amount, and got an error ‘Transaction is too big’.