Wallets Syncing & BAT Wallet Syncing

With the new crypto wallet syncing feature released for desktop and coming to mobile, Brave Sync will not sync this data between devices, instead on desktop and mobile you will restore your 12/24 word phrase which will recover your funds and transaction history from the blockchain? Or is brave going to allow your crypto wallet to be synced using Brave Sync with other connected devices.

And will this be the same too for the BAT rewards wallet, were on desktop and mobile you can restore and recover your wallet with a 12/24 word phrase? BAT wallet will sync between devices with Brave Sync?