@brianleonard,
Thank you for reaching out and for providing all the details of the issue up front.
This may seem obvious, but since starting the Sync chain between devices, have you tried closing/quitting the browser on both devices, then relaunching? Sometimes a relaunch kick-starts the sync process that was stick prior.
Additionally, if this does not work, can you please send me a screenshot of your brave://sync-internals page so I can take a closer look at your issue?