External Link Dialog Box vs Trust Center Alert

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Hi,

When you have external links on your workbook, when you open it, you get either:
1- A Dialog box that says, "Your workbook contains link to one or more external sources...."
2- A security warning just below the ribbon that says, "External Data Connections Have Been Disabled"

So my question is; is there any rule regarding which of the above will pop up?

Thanks