Can I query between NaviCat Connections?

[cpowell950]

I have several connected databases, which I canNOT alter. I can NOT get anyone to establish sever links.
All the ones I want to connect are SQLServer.
See attached Image.
They have related, but different, business data.
Can I write a query in any of them to select data from several connections at once?
I tried GoldPoint . dbo . <DBname> . <table>
LEFT JOIN NLS . <DBname> . <table>
Did not work
Any ideas? is it even possible?
Thanks all in advance!

[mayho]

If you do not have linked servers, you cannot to access data in other SQL Server instances.

For more information, please refer to - https://msdn.microsoft.com/en-us/library/ms188279.aspx