Could you please tell us how did you deploy Office?
Such as via ODT with configuration file (.xml) or other methods. Please kindly share us the .xml file for further analysis.
Here is a similar thread, "Office 2019 Pro Plus C2R Takes forever to install (hours). See Errors in the install log", you could have look.
This user solved the issue via adding the "SourcePath" attribute into .xml file.
Any updates, you can let us know.
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