1. BTC has higher network fees than a coin like LTC so by starting with LTC you save some money in network fees.
2. Centralized exchanges, like Coinbase, partly manage their risk by tracking transactions on the blockchain, which are all mostly public on BTC. Sending BTC directly from the Coinbase wallet to Cain makes it so you have linked your identity, since they do KYC, to Cain's BTC wallet address. In centralized exchanges a lot of these CN vendors including vendors like Nexaph (even though I know they arent really CN) are blacklisted or considered high risk because of any number of reasons but mostly it's due to sactions, illegal activites, ect.. Being linked to any of these addresses will undoubtly raise the risk profile of your Coinbase account and potentially lead to closure. One way to decrease the likelyhood that your Coinbase account will be closed or deemed high risk is by sending the funds first to a non-custodial intermediary wallet such as Exodus or Cake Wallet before sending it to Cain. This will distance you from a blacklisted or high risk wallet but will not completely anonymize the transaction. For the purposes of most people, distancing alone should keep your Coinbase account in good standing.
