Hello there,
Yes, this flow is possible. After a connection has been created, you can add your content from any external data source such as an on-premises content source or an external SaaS service.
This article describes the implementation and operational limits for Microsoft Graph connectors. Keep these limits in mind when designing connectors. https://learn.microsoft.com/en-us/graph/connecting-external-content-api-limits
The Microsoft Graph connectors gallery includes a brief description of each of the connectors created by our partners, and a link to each partner's website. https://learn.microsoft.com/en-us/microsoftsearch/connectors-overview
Hope this resolves your Query !!
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