Merge tables based on emails but compare dates first

Hi all. I need to merge two tables based on email, but first compare dates from both tables. Let me explain,

I have a table "Workplace SafetyTrainings" where we store dates and scores of each employee training

I need to merge it with HR table where we store full name, department, position and date hired

As you can see, one employee can change departments and positions over time and take safety training again.

I need a third table that will show the exact position and department at the time of the training.

This is the desired output:

My first thought was to merge tables in Power Query and compare training date and date hired but I dont know how to do it.

I appreciate any option (DAX, Power Query)

Thank you