Brave Sync - what if synced devices lost

I am new to Brave and I love its features and privacy.

I would like to know more about Brave Sync.

I have enabled Brave-Sync between my Desktop and mobile and I have stored the Sync Key in my secure vault.

What if I Lost / accidently formatted both Desktop and Mobile phone?

If it’s Safari / Chrome, I can restore passwords via cloud logins but I believe such thing is not available with Brave.

Is it possible to restore my data if both synced devices lost / formatted? (I still have Sync key)