When reading/converting a RTF file as a Word document. OLE content is not read. The word document is missing all OLE content.
The RTF file I used contains an OLE picture.
You can reproduce this behaviour with the following code:
WordDocument wordDocument = new WordDocument(rtfFileName, Syncfusion.DocIO.FormatType.Rtf);
string wordFileName = @"C:\Document.docx";
wordDocument.Save(wordFileName, Syncfusion.DocIO.FormatType.Docx);
Unfortunately I can't attach an example RTF file with an OLE picture inside: "File type is not allowed".