The time needed to perform the first time connection sync with Xero will depend on the number Contacts, Account Codes and Tax Rates you have created on Xero. Going forward the time to process will depend on the number of invoices or contacts created or edited.
Please do not navigate from the integrations page on Klipboard to another area on Klipboard once the Xero sync is in progress. A progress bar will highlight the status of the sync and you will be notified once the sync has been completed.