Currently, if you have more than one profile on a computer, and have ‘Sync all tabs’ enabled,
if you open Brave on another computer with in the same sync chain, you will be able to go to
History > Tabs from Other Devices > … and see the tabs that were sync’d from the first computer there.
However, I have three profiles on that first computer, and I can only access the sync’d tabs from the first profile. The other two profiles are not available, unfortunately.