A professor at a University X is holding a second appointment as a researcher on leave at another University in a different country with his full salary being paid from his funding there.
The professor in question is likely being employed and paid as a full-time assistant professor at uni X despite rarely showing up there which may be [illegal][1].

How can I check if a professor who holds a second appointment as a
faculty researcher and is being paid full time in both appoinments?

  [1]: https://academia.stackexchange.com/questions/190519/how-to-get-two-paid-affiliations/190520#190520