Faster way to sync existing HubSpot with LeadCRM

When getting started, I would like to see which contacts need syncing between LeadCRM and HubSpot. I have thousands of contacts in both. If I have to open each contact in LinkedIn to see if they've been synced or not (by seeing the HubSpot icon), that is going to take a lot of time. If I could see a HubSpot icon next to each LinkedIn contact (in a list view), that would show me which ones are not synced, and I could focus on them. As it stands, I need to write them down or remember them, and that's just too much effort.