Is it technically possible to integrate CRM 2011 with NAV 2018 using the NAV build-in connector?

What I did is the following :

•Installed the Connector for Microsoft Dynamics NAV version 3.3.1007.1 standalone application because the solution found in NAV 2018 failed to install.
•Enabled the connector on NAV 2018
•I tested to couple a currency on NAV and it was created on CRM

I just want to make sure that technically this is possible and would make errors regarding all known maps. I know it is better to upgrade the CRM but this is not applicable at this moment.

Thanks :)